9913404831 has 32 divisors (see below), whose sum is σ = 15191193600. Its totient is φ = 5687117280.

The previous prime is 9913404811. The next prime is 9913404841. The reversal of 9913404831 is 1384043199.

It is not a de Polignac number, because 9913404831 - 2⁵ = 9913404799 is a prime.

It is a super-2 number, since 2×9913404831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913404811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 821020 + ... + 833006.

It is an arithmetic number, because the mean of its divisors is an integer number (474724800).

Almost surely, 2^9913404831 is an apocalyptic number.

9913404831 is a deficient number, since it is larger than the sum of its proper divisors (5277788769).

9913404831 is a wasteful number, since it uses less digits than its factorization.

9913404831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13339.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 9913404831 is about 99566.0827340315. The cubic root of 9913404831 is about 2148.1978647372.

The spelling of 9913404831 in words is "nine billion, nine hundred thirteen million, four hundred four thousand, eight hundred thirty-one".