13031030404 has 72 divisors (see below), whose sum is σ = 27525015000. Its totient is φ = 5375881728.

The previous prime is 13031030399. The next prime is 13031030423. The reversal of 13031030404 is 40403013031.

It can be written as a sum of positive squares in 4 ways, for example, as 6161936004 + 6869094400 = 78498^2 + 82880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980432 + ... + 1987000.

It is an arithmetic number, because the mean of its divisors is an integer number (382291875).

Almost surely, 2^13031030404 is an apocalyptic number.

13031030404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13031030404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13762507500).

13031030404 is an abundant number, since it is smaller than the sum of its proper divisors (14493984596).

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

13031030404 is a wasteful number, since it uses less digits than its factorization.

13031030404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6965 (or 6956 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13031030404 its reverse (40403013031), we get a palindrome (53434043435).

The spelling of 13031030404 in words is "thirteen billion, thirty-one million, thirty thousand, four hundred four".