131615673 has 16 divisors (see below), whose sum is σ = 202976256. Its totient is φ = 74301840.

The previous prime is 131615639. The next prime is 131615707. The reversal of 131615673 is 376516131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131615639) and next prime (131615707).

It is not a de Polignac number, because 131615673 - 2⁶ = 131615609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131615633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36013 + ... + 39498.

It is an arithmetic number, because the mean of its divisors is an integer number (12686016).

Almost surely, 2^131615673 is an apocalyptic number.

It is an amenable number.

131615673 is a deficient number, since it is larger than the sum of its proper divisors (71360583).

131615673 is an equidigital number, since it uses as much as digits as its factorization.

131615673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75604.

The product of its digits is 11340, while the sum is 33.

The square root of 131615673 is about 11472.3874150065. The cubic root of 131615673 is about 508.6697010385.

The spelling of 131615673 in words is "one hundred thirty-one million, six hundred fifteen thousand, six hundred seventy-three".