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1310001213 = 31171372901
BaseRepresentation
bin100111000010101…
…0000100000111101
310101021222221211110
41032011100200331
510140330014323
6333553512233
744314553343
oct11605204075
93337887743
101310001213
11612509334
12306872679
1317b52a261
14c5da5993
157a018793
hex4e15083d

1310001213 has 8 divisors (see below), whose sum is σ = 1748164576. Its totient is φ = 872586000.

The previous prime is 1310001211. The next prime is 1310001221. The reversal of 1310001213 is 3121000131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1310001213 - 21 = 1310001211 is a prime.

It is a super-2 number, since 2×13100012132 = 3432206356122942738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182938 + ... + 189963.

It is an arithmetic number, because the mean of its divisors is an integer number (218520572).

Almost surely, 21310001213 is an apocalyptic number.

It is an amenable number.

1310001213 is a deficient number, since it is larger than the sum of its proper divisors (438163363).

1310001213 is a wasteful number, since it uses less digits than its factorization.

1310001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374075.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1310001213 is about 36193.9388986609. The cubic root of 1310001213 is about 1094.1845190849.

Adding to 1310001213 its reverse (3121000131), we get a palindrome (4431001344).

The spelling of 1310001213 in words is "one billion, three hundred ten million, one thousand, two hundred thirteen".

Divisors: 1 3 1171 3513 372901 1118703 436667071 1310001213