131381173 has 8 divisors (see below), whose sum is σ = 163800000. Its totient is φ = 102374880.

The previous prime is 131381153. The next prime is 131381183. The reversal of 131381173 is 371183131.

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 131381173 - 2²¹ = 129284021 is a prime.

It is a super-2 number, since 2×131381173² = 34522025237711858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131381123) 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, 853048 + ... + 853201.

It is an arithmetic number, because the mean of its divisors is an integer number (20475000).

Almost surely, 2^131381173 is an apocalyptic number.

It is an amenable number.

131381173 is a deficient number, since it is larger than the sum of its proper divisors (32418827).

131381173 is a wasteful number, since it uses less digits than its factorization.

131381173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706267.

The product of its digits is 1512, while the sum is 28.

The square root of 131381173 is about 11462.1626667920. The cubic root of 131381173 is about 508.3674220503.

The spelling of 131381173 in words is "one hundred thirty-one million, three hundred eighty-one thousand, one hundred seventy-three".