137490831 has 16 divisors (see below), whose sum is σ = 204732000. Its totient is φ = 91191744.

The previous prime is 137490817. The next prime is 137490833. The reversal of 137490831 is 138094731.

It is a happy number.

137490831 is a `hidden beast` number, since 137 + 490 + 8 + 31 = 666.

137490831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137490831 - 2⁵ = 137490799 is a prime.

It is a super-2 number, since 2×137490831² = 37807457218141122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137490833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7606 + ... + 18243.

It is an arithmetic number, because the mean of its divisors is an integer number (12795750).

Almost surely, 2^137490831 is an apocalyptic number.

137490831 is a deficient number, since it is larger than the sum of its proper divisors (67241169).

137490831 is a wasteful number, since it uses less digits than its factorization.

137490831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26055 (or 26049 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 137490831 is about 11725.6484255669. The cubic root of 137490831 is about 516.1285847745.

The spelling of 137490831 in words is "one hundred thirty-seven million, four hundred ninety thousand, eight hundred thirty-one".