13031051904 has 576 divisors, whose sum is σ = 43891979040. Its totient is φ = 3842961408.

The previous prime is 13031051863. The next prime is 13031051921. The reversal of 13031051904 is 40915013031.

13031051904 is a `hidden beast` number, since 130 + 3 + 10 + 519 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 194493279 + ... + 194493345.

Almost surely, 2^13031051904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13031051904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21945989520).

13031051904 is an abundant number, since it is smaller than the sum of its proper divisors (30860927136).

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

13031051904 is an equidigital number, since it uses as much as digits as its factorization.

13031051904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 13031051904 its reverse (40915013031), we get a palindrome (53946064935).

The spelling of 13031051904 in words is "thirteen billion, thirty-one million, fifty-one thousand, nine hundred four".