137431711 has 4 divisors (see below), whose sum is σ = 141865024. Its totient is φ = 132998400.

The previous prime is 137431699. The next prime is 137431729. The reversal of 137431711 is 117134731.

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

It is a cyclic number.

It is not a de Polignac number, because 137431711 - 2⁷ = 137431583 is a prime.

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 137431711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137434711) 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, 2216610 + ... + 2216671.

It is an arithmetic number, because the mean of its divisors is an integer number (35466256).

Almost surely, 2^137431711 is an apocalyptic number.

137431711 is a deficient number, since it is larger than the sum of its proper divisors (4433313).

137431711 is an equidigital number, since it uses as much as digits as its factorization.

137431711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433312.

The product of its digits is 1764, while the sum is 28.

The square root of 137431711 is about 11723.1271851840. The cubic root of 137431711 is about 516.0545970613.

The spelling of 137431711 in words is "one hundred thirty-seven million, four hundred thirty-one thousand, seven hundred eleven".