131373062721 has 12 divisors (see below), whose sum is σ = 189777554148. Its totient is φ = 87574443264.

The previous prime is 131373062707. The next prime is 131373062741. The reversal of 131373062721 is 127260373131.

131373062721 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 7 + 3 + 0 + 627 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 91945400625 + 39427662096 = 303225^2 + 198564^2 .

It is not a de Polignac number, because 131373062721 - 2²² = 131368868417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131373062701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 522700 + ... + 732093.

It is an arithmetic number, because the mean of its divisors is an integer number (15814796179).

Almost surely, 2^131373062721 is an apocalyptic number.

It is an amenable number.

131373062721 is a deficient number, since it is larger than the sum of its proper divisors (58404491427).

131373062721 is a wasteful number, since it uses less digits than its factorization.

131373062721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266432 (or 1266429 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The spelling of 131373062721 in words is "one hundred thirty-one billion, three hundred seventy-three million, sixty-two thousand, seven hundred twenty-one".