137587631 has 2 divisors, whose sum is σ = 137587632. Its totient is φ = 137587630.

The previous prime is 137587627. The next prime is 137587663. The reversal of 137587631 is 136785731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137587631 - 2² = 137587627 is a prime.

It is a super-2 number, since 2×137587631² = 37860712408384322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137517631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68793815 + 68793816.

It is an arithmetic number, because the mean of its divisors is an integer number (68793816).

Almost surely, 2^137587631 is an apocalyptic number.

137587631 is a deficient number, since it is larger than the sum of its proper divisors (1).

137587631 is an equidigital number, since it uses as much as digits as its factorization.

137587631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 137587631 is about 11729.7754027944. The cubic root of 137587631 is about 516.2496826111.

The spelling of 137587631 in words is "one hundred thirty-seven million, five hundred eighty-seven thousand, six hundred thirty-one".