131208031 has 8 divisors (see below), whose sum is σ = 140613984. Its totient is φ = 122110560.

The previous prime is 131208017. The next prime is 131208041. The reversal of 131208031 is 130802131.

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 131208031 - 2⁹ = 131207519 is a prime.

It is a super-2 number, since 2×131208031² = 34431094797793922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131208041) 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, 76240 + ... + 77941.

It is an arithmetic number, because the mean of its divisors is an integer number (17576748).

Almost surely, 2^131208031 is an apocalyptic number.

131208031 is a deficient number, since it is larger than the sum of its proper divisors (9405953).

131208031 is a wasteful number, since it uses less digits than its factorization.

131208031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154241.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 131208031 is about 11454.6074136131. The cubic root of 131208031 is about 508.1440048376.

The spelling of 131208031 in words is "one hundred thirty-one million, two hundred eight thousand, thirty-one".