137342813 has 4 divisors (see below), whose sum is σ = 145421820. Its totient is φ = 129263808.

The previous prime is 137342809. The next prime is 137342819. The reversal of 137342813 is 318243731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 128210329 + 9132484 = 11323^2 + 3022^2 .

It is a cyclic number.

It is not a de Polignac number, because 137342813 - 2² = 137342809 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 137342813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137342819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4039478 + ... + 4039511.

It is an arithmetic number, because the mean of its divisors is an integer number (36355455).

Almost surely, 2^137342813 is an apocalyptic number.

It is an amenable number.

137342813 is a deficient number, since it is larger than the sum of its proper divisors (8079007).

137342813 is an equidigital number, since it uses as much as digits as its factorization.

137342813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8079006.

The product of its digits is 12096, while the sum is 32.

The square root of 137342813 is about 11719.3350067314. The cubic root of 137342813 is about 515.9433027162.

The spelling of 137342813 in words is "one hundred thirty-seven million, three hundred forty-two thousand, eight hundred thirteen".