137431318 has 8 divisors (see below), whose sum is σ = 206289000. Its totient is φ = 68668320.

The previous prime is 137431297. The next prime is 137431379. The reversal of 137431318 is 813134731.

137431318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 137431318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19923 + ... + 25918.

It is an arithmetic number, because the mean of its divisors is an integer number (25786125).

Almost surely, 2^137431318 is an apocalyptic number.

137431318 is a deficient number, since it is larger than the sum of its proper divisors (68857682).

137431318 is a wasteful number, since it uses less digits than its factorization.

137431318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47342.

The product of its digits is 6048, while the sum is 31.

The square root of 137431318 is about 11723.1104234329. The cubic root of 137431318 is about 516.0541051573.

The spelling of 137431318 in words is "one hundred thirty-seven million, four hundred thirty-one thousand, three hundred eighteen".