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23131122 = 2371035347
BaseRepresentation
bin101100000111…
…1001111110010
31121112011221020
41120033033302
521410143442
62143440310
7400416450
oct130171762
947464836
1023131122
1112069833
1278b6096
134a3b671
1431019d0
15206d9ec
hex160f3f2

23131122 has 32 divisors (see below), whose sum is σ = 53394432. Its totient is φ = 6543504.

The previous prime is 23131111. The next prime is 23131181. The reversal of 23131122 is 22113132.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1653 + ... + 6999.

It is an arithmetic number, because the mean of its divisors is an integer number (1668576).

Almost surely, 223131122 is an apocalyptic number.

23131122 is an abundant number, since it is smaller than the sum of its proper divisors (30263310).

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

23131122 is a wasteful number, since it uses less digits than its factorization.

23131122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5462.

The product of its digits is 72, while the sum is 15.

The square root of 23131122 is about 4809.4825085450. The cubic root of 23131122 is about 284.9260996451.

Adding to 23131122 its reverse (22113132), we get a palindrome (45244254).

The spelling of 23131122 in words is "twenty-three million, one hundred thirty-one thousand, one hundred twenty-two".

Divisors: 1 2 3 6 7 14 21 42 103 206 309 618 721 1442 2163 4326 5347 10694 16041 32082 37429 74858 112287 224574 550741 1101482 1652223 3304446 3855187 7710374 11565561 23131122