137932731 has 6 divisors (see below), whose sum is σ = 199236180. Its totient is φ = 91955148.

The previous prime is 137932693. The next prime is 137932741. The reversal of 137932731 is 137239731.

It is not a de Polignac number, because 137932731 - 2⁶ = 137932667 is a prime.

It is a super-2 number, since 2×137932731² = 38050876562236722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137932741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7662921 + ... + 7662938.

It is an arithmetic number, because the mean of its divisors is an integer number (33206030).

Almost surely, 2^137932731 is an apocalyptic number.

137932731 is a deficient number, since it is larger than the sum of its proper divisors (61303449).

137932731 is a wasteful number, since it uses less digits than its factorization.

137932731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15325865 (or 15325862 counting only the distinct ones).

The product of its digits is 23814, while the sum is 36.

The square root of 137932731 is about 11744.4766166909. The cubic root of 137932731 is about 516.6809447783.

The spelling of 137932731 in words is "one hundred thirty-seven million, nine hundred thirty-two thousand, seven hundred thirty-one".