137917331 has 4 divisors (see below), whose sum is σ = 139663200. Its totient is φ = 136171464.

The previous prime is 137917321. The next prime is 137917343. The reversal of 137917331 is 133719731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137917331 - 2⁶ = 137917267 is a prime.

It is a super-2 number, since 2×137917331² = 38042380380327122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137917291 and 137917300.

It is not an unprimeable number, because it can be changed into a prime (137917321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872816 + ... + 872973.

It is an arithmetic number, because the mean of its divisors is an integer number (34915800).

Almost surely, 2^137917331 is an apocalyptic number.

137917331 is a deficient number, since it is larger than the sum of its proper divisors (1745869).

137917331 is an equidigital number, since it uses as much as digits as its factorization.

137917331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745868.

The product of its digits is 11907, while the sum is 35.

The square root of 137917331 is about 11743.8209710469. The cubic root of 137917331 is about 516.6617151566.

The spelling of 137917331 in words is "one hundred thirty-seven million, nine hundred seventeen thousand, three hundred thirty-one".