137273723 has 8 divisors (see below), whose sum is σ = 138354048. Its totient is φ = 136198144.

The previous prime is 137273701. The next prime is 137273749. The reversal of 137273723 is 327372731.

137273723 is digitally balanced in base 2, 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 cyclic number.

It is not a de Polignac number, because 137273723 - 2⁸ = 137273467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137273753) 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, 74390 + ... + 76212.

It is an arithmetic number, because the mean of its divisors is an integer number (17294256).

Almost surely, 2^137273723 is an apocalyptic number.

137273723 is a deficient number, since it is larger than the sum of its proper divisors (1080325).

137273723 is a wasteful number, since it uses less digits than its factorization.

137273723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373.

The product of its digits is 37044, while the sum is 35.

The square root of 137273723 is about 11716.3869430810. The cubic root of 137273723 is about 515.8567734906.

The spelling of 137273723 in words is "one hundred thirty-seven million, two hundred seventy-three thousand, seven hundred twenty-three".