131321154125 has 64 divisors (see below), whose sum is σ = 191169538560. Its totient is φ = 88195161600.

The previous prime is 131321154121. The next prime is 131321154137. The reversal of 131321154125 is 521451123131.

It is a happy number.

It is not a de Polignac number, because 131321154125 - 2² = 131321154121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131321154121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30558977 + ... + 30563273.

It is an arithmetic number, because the mean of its divisors is an integer number (2987024040).

Almost surely, 2^131321154125 is an apocalyptic number.

It is an amenable number.

131321154125 is a deficient number, since it is larger than the sum of its proper divisors (59848384435).

131321154125 is an equidigital number, since it uses as much as digits as its factorization.

131321154125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031 (or 5021 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

Adding to 131321154125 its reverse (521451123131), we get a palindrome (652772277256).

The spelling of 131321154125 in words is "one hundred thirty-one billion, three hundred twenty-one million, one hundred fifty-four thousand, one hundred twenty-five".