131881375 has 16 divisors (see below), whose sum is σ = 173253600. Its totient is φ = 99950400.

The previous prime is 131881369. The next prime is 131881381. The reversal of 131881375 is 573188131.

It is an interprime number because it is at equal distance from previous prime (131881369) and next prime (131881381).

It is not a de Polignac number, because 131881375 - 2¹⁹ = 131357087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25390 + ... + 30139.

It is an arithmetic number, because the mean of its divisors is an integer number (10828350).

Almost surely, 2^131881375 is an apocalyptic number.

131881375 is a deficient number, since it is larger than the sum of its proper divisors (41372225).

131881375 is an equidigital number, since it uses as much as digits as its factorization.

131881375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55563 (or 55553 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 131881375 is about 11483.9616422209. The cubic root of 131881375 is about 509.0117669616.

The spelling of 131881375 in words is "one hundred thirty-one million, eight hundred eighty-one thousand, three hundred seventy-five".