137318723 has 8 divisors (see below), whose sum is σ = 139093200. Its totient is φ = 135549568.

The previous prime is 137318693. The next prime is 137318759. The reversal of 137318723 is 327813731.

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

It is a cyclic number.

It is not a de Polignac number, because 137318723 - 2⁶ = 137318659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137315723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84008 + ... + 85626.

It is an arithmetic number, because the mean of its divisors is an integer number (17386650).

Almost surely, 2^137318723 is an apocalyptic number.

137318723 is a deficient number, since it is larger than the sum of its proper divisors (1774477).

137318723 is an equidigital number, since it uses as much as digits as its factorization.

137318723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661.

The product of its digits is 21168, while the sum is 35.

The square root of 137318723 is about 11718.3071729666. The cubic root of 137318723 is about 515.9131353788.

The spelling of 137318723 in words is "one hundred thirty-seven million, three hundred eighteen thousand, seven hundred twenty-three".