900831013 has 4 divisors (see below), whose sum is σ = 914276320. Its totient is φ = 887385708.

The previous prime is 900831007. The next prime is 900831047. The reversal of 900831013 is 310138009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 900831013 - 2⁹ = 900830501 is a prime.

It is a super-2 number, since 2×900831013² = 1622993027965212338, 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 (900831053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6722553 + ... + 6722686.

It is an arithmetic number, because the mean of its divisors is an integer number (228569080).

Almost surely, 2^900831013 is an apocalyptic number.

It is an amenable number.

900831013 is a deficient number, since it is larger than the sum of its proper divisors (13445307).

900831013 is a wasteful number, since it uses less digits than its factorization.

900831013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13445306.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 900831013 is about 30013.8470210002. The cubic root of 900831013 is about 965.7864540175.

The spelling of 900831013 in words is "nine hundred million, eight hundred thirty-one thousand, thirteen".