131600031 has 16 divisors (see below), whose sum is σ = 179262720. Its totient is φ = 85849280.

The previous prime is 131600003. The next prime is 131600059. The reversal of 131600031 is 130006131.

It is an interprime number because it is at equal distance from previous prime (131600003) and next prime (131600059).

It is a cyclic number.

It is not a de Polignac number, because 131600031 - 2⁹ = 131599519 is a prime.

It is a super-2 number, since 2×131600031² = 34637136318401922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131601031) 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, 39646 + ... + 42836.

It is an arithmetic number, because the mean of its divisors is an integer number (11203920).

Almost surely, 2^131600031 is an apocalyptic number.

131600031 is a deficient number, since it is larger than the sum of its proper divisors (47662689).

131600031 is a wasteful number, since it uses less digits than its factorization.

131600031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131600031 is about 11471.7056709105. The cubic root of 131600031 is about 508.6495491156.

Adding to 131600031 its reverse (130006131), we get a palindrome (261606162).

The spelling of 131600031 in words is "one hundred thirty-one million, six hundred thousand, thirty-one".