137383731 has 6 divisors (see below), whose sum is σ = 198443180. Its totient is φ = 91589148.

The previous prime is 137383711. The next prime is 137383739.

137383731 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 137383731 - 2⁹ = 137383219 is a prime.

It is a super-2 number, since 2×137383731² = 37748579086960722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137383739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7632421 + ... + 7632438.

Almost surely, 2^137383731 is an apocalyptic number.

137383731 is a deficient number, since it is larger than the sum of its proper divisors (61059449).

137383731 is a wasteful number, since it uses less digits than its factorization.

137383731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15264865 (or 15264862 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 137383731 is about 11721.0806242428. The cubic root of 137383731 is about 515.9945352765.

The spelling of 137383731 in words is "one hundred thirty-seven million, three hundred eighty-three thousand, seven hundred thirty-one".