137311899 has 4 divisors (see below), whose sum is σ = 183082536. Its totient is φ = 91541264.

The previous prime is 137311891. The next prime is 137311903. The reversal of 137311899 is 998113731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998113731 = 3 ⋅332704577.

It is a cyclic number.

It is not a de Polignac number, because 137311899 - 2³ = 137311891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137311899.

It is not an unprimeable number, because it can be changed into a prime (137311891) 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, 22885314 + ... + 22885319.

It is an arithmetic number, because the mean of its divisors is an integer number (45770634).

Almost surely, 2^137311899 is an apocalyptic number.

137311899 is a deficient number, since it is larger than the sum of its proper divisors (45770637).

137311899 is an equidigital number, since it uses as much as digits as its factorization.

137311899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45770636.

The product of its digits is 40824, while the sum is 42.

The square root of 137311899 is about 11718.0160010131. The cubic root of 137311899 is about 515.9045892037.

The spelling of 137311899 in words is "one hundred thirty-seven million, three hundred eleven thousand, eight hundred ninety-nine".