137231128 has 8 divisors (see below), whose sum is σ = 257308380. Its totient is φ = 68615560.

The previous prime is 137231111. The next prime is 137231177. The reversal of 137231128 is 821132731.

137231128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 137231096 and 137231105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8576938 + ... + 8576953.

Almost surely, 2^137231128 is an apocalyptic number.

It is an amenable number.

137231128 is a deficient number, since it is larger than the sum of its proper divisors (120077252).

137231128 is a wasteful number, since it uses less digits than its factorization.

137231128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17153897 (or 17153893 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 137231128 is about 11714.5690488383. The cubic root of 137231128 is about 515.8034124835.

Adding to 137231128 its reverse (821132731), we get a palindrome (958363859).

The spelling of 137231128 in words is "one hundred thirty-seven million, two hundred thirty-one thousand, one hundred twenty-eight".