13131321300 has 54 divisors (see below), whose sum is σ = 41159399918. Its totient is φ = 3501685440.

The previous prime is 13131321283. The next prime is 13131321317. The reversal of 13131321300 is 312313131.

It is a happy number.

13131321300 is a `hidden beast` number, since 1 + 31 + 313 + 21 + 300 = 666.

It is an interprime number because it is at equal distance from previous prime (13131321283) and next prime (13131321317).

It can be written as a sum of positive squares in 3 ways, for example, as 2198109456 + 10933211844 = 46884^2 + 104562^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7294279 + ... + 7296078.

Almost surely, 2^13131321300 is an apocalyptic number.

13131321300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131321300 is an abundant number, since it is smaller than the sum of its proper divisors (28028078618).

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

13131321300 is a wasteful number, since it uses less digits than its factorization.

13131321300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14590377 (or 14590367 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 13131321300 its reverse (312313131), we get a palindrome (13443634431).

The spelling of 13131321300 in words is "thirteen billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred".