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1213141344 = 25327674567
BaseRepresentation
bin100100001001111…
…0001000101100000
310010112201222001220
41020103301011200
54441031010334
6320213455040
742030350142
oct11023610540
93115658056
101213141344
11572872058
1229a341480
13164445b1c
14b7190c92
1571784449
hex484f1160

1213141344 has 48 divisors (see below), whose sum is σ = 3186344448. Its totient is φ = 404145792.

The previous prime is 1213141331. The next prime is 1213141361. The reversal of 1213141344 is 4431413121.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263349 + ... + 267915.

It is an arithmetic number, because the mean of its divisors is an integer number (66382176).

Almost surely, 21213141344 is an apocalyptic number.

It is an amenable number.

1213141344 is an abundant number, since it is smaller than the sum of its proper divisors (1973203104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213141344 is a wasteful number, since it uses less digits than its factorization.

1213141344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7347 (or 7339 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1213141344 is about 34830.1786386461. The cubic root of 1213141344 is about 1066.5235950468.

Adding to 1213141344 its reverse (4431413121), we get a palindrome (5644554465).

The spelling of 1213141344 in words is "one billion, two hundred thirteen million, one hundred forty-one thousand, three hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 2767 4567 5534 8301 9134 11068 13701 16602 18268 22136 27402 33204 36536 44272 54804 66408 73072 88544 109608 132816 146144 219216 265632 438432 12636889 25273778 37910667 50547556 75821334 101095112 151642668 202190224 303285336 404380448 606570672 1213141344