137887131 has 4 divisors (see below), whose sum is σ = 183849512. Its totient is φ = 91924752.

The previous prime is 137887129. The next prime is 137887147. The reversal of 137887131 is 131788731.

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

It is not a de Polignac number, because 137887131 - 2¹ = 137887129 is a prime.

It is a super-2 number, since 2×137887131² = 38025721790822322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137887131.

It is not an unprimeable number, because it can be changed into a prime (137887151) 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, 22981186 + ... + 22981191.

It is an arithmetic number, because the mean of its divisors is an integer number (45962378).

Almost surely, 2^137887131 is an apocalyptic number.

137887131 is a deficient number, since it is larger than the sum of its proper divisors (45962381).

137887131 is an equidigital number, since it uses as much as digits as its factorization.

137887131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45962380.

The product of its digits is 28224, while the sum is 39.

The square root of 137887131 is about 11742.5351181080. The cubic root of 137887131 is about 516.6240009629.

The spelling of 137887131 in words is "one hundred thirty-seven million, eight hundred eighty-seven thousand, one hundred thirty-one".