13031902 has 16 divisors (see below), whose sum is σ = 21368592. Its totient is φ = 5924160.

The previous prime is 13031899. The next prime is 13031981. The reversal of 13031902 is 20913031.

It is a self number, because there is not a number n which added to its sum of digits gives 13031902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1999 + ... + 5482.

It is an arithmetic number, because the mean of its divisors is an integer number (1335537).

Almost surely, 2^13031902 is an apocalyptic number.

13031902 is a deficient number, since it is larger than the sum of its proper divisors (8336690).

13031902 is a wasteful number, since it uses less digits than its factorization.

13031902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7563.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 13031902 is about 3609.9725760731. The cubic root of 13031902 is about 235.3256508302.

Adding to 13031902 its reverse (20913031), we get a palindrome (33944933).

The spelling of 13031902 in words is "thirteen million, thirty-one thousand, nine hundred two".