131321106625 has 16 divisors (see below), whose sum is σ = 164253819600. Its totient is φ = 104822860800.

The previous prime is 131321106617. The next prime is 131321106649. The reversal of 131321106625 is 526601123131.

It can be written as a sum of positive squares in 8 ways, for example, as 38225333169 + 93095773456 = 195513^2 + 305116^2 .

It is not a de Polignac number, because 131321106625 - 2³ = 131321106617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113774 + ... + 1226023.

It is an arithmetic number, because the mean of its divisors is an integer number (10265863725).

Almost surely, 2^131321106625 is an apocalyptic number.

It is an amenable number.

131321106625 is a deficient number, since it is larger than the sum of its proper divisors (32932712975).

131321106625 is an equidigital number, since it uses as much as digits as its factorization.

131321106625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340261 (or 2340251 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 131321106625 its reverse (526601123131), we get a palindrome (657922229756).

The spelling of 131321106625 in words is "one hundred thirty-one billion, three hundred twenty-one million, one hundred six thousand, six hundred twenty-five".