137231385 has 16 divisors (see below), whose sum is σ = 220843584. Its totient is φ = 72765632.

The previous prime is 137231383. The next prime is 137231401. The reversal of 137231385 is 583132731.

137231385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 137231385 - 2¹ = 137231383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137231383) 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, 23847 + ... + 29036.

It is an arithmetic number, because the mean of its divisors is an integer number (13802724).

Almost surely, 2^137231385 is an apocalyptic number.

137231385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137231385 is a deficient number, since it is larger than the sum of its proper divisors (83612199).

137231385 is a wasteful number, since it uses less digits than its factorization.

137231385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53064.

The product of its digits is 15120, while the sum is 33.

The square root of 137231385 is about 11714.5800180800. The cubic root of 137231385 is about 515.8037344740.

The spelling of 137231385 in words is "one hundred thirty-seven million, two hundred thirty-one thousand, three hundred eighty-five".