137385023 has 4 divisors (see below), whose sum is σ = 138075600. Its totient is φ = 136694448.

The previous prime is 137385019. The next prime is 137385037. The reversal of 137385023 is 320583731.

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 137385023 - 2² = 137385019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137385013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344990 + ... + 345387.

It is an arithmetic number, because the mean of its divisors is an integer number (34518900).

Almost surely, 2^137385023 is an apocalyptic number.

137385023 is a deficient number, since it is larger than the sum of its proper divisors (690577).

137385023 is an equidigital number, since it uses as much as digits as its factorization.

137385023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690576.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 137385023 is about 11721.1357384854. The cubic root of 137385023 is about 515.9961527967.

The spelling of 137385023 in words is "one hundred thirty-seven million, three hundred eighty-five thousand, twenty-three".