137673131 has 4 divisors (see below), whose sum is σ = 137696664. Its totient is φ = 137649600.

The previous prime is 137673103. The next prime is 137673163. The reversal of 137673131 is 131376731.

137673131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 131376731 = 17 ⋅7728043.

It is a cyclic number.

It is not a de Polignac number, because 137673131 - 2¹⁰ = 137672107 is a prime.

It is a super-2 number, since 2×137673131² = 37907781998686322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137676131) 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, 4571 + ... + 17211.

It is an arithmetic number, because the mean of its divisors is an integer number (34424166).

Almost surely, 2^137673131 is an apocalyptic number.

137673131 is a deficient number, since it is larger than the sum of its proper divisors (23533).

137673131 is a wasteful number, since it uses less digits than its factorization.

137673131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23532.

The product of its digits is 7938, while the sum is 32.

The square root of 137673131 is about 11733.4194078282. The cubic root of 137673131 is about 516.3565967953.

The spelling of 137673131 in words is "one hundred thirty-seven million, six hundred seventy-three thousand, one hundred thirty-one".