131402031 has 16 divisors (see below), whose sum is σ = 177811200. Its totient is φ = 86303360.

The previous prime is 131402021. The next prime is 131402041. The reversal of 131402031 is 130204131.

It is an interprime number because it is at equal distance from previous prime (131402021) and next prime (131402041).

It is a cyclic number.

It is not a de Polignac number, because 131402031 - 2⁷ = 131401903 is a prime.

It is a super-2 number, since 2×131402031² = 34532987501849922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131402031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131402021) 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, 148711 + ... + 149591.

It is an arithmetic number, because the mean of its divisors is an integer number (11113200).

Almost surely, 2^131402031 is an apocalyptic number.

131402031 is a deficient number, since it is larger than the sum of its proper divisors (46409169).

131402031 is an equidigital number, since it uses as much as digits as its factorization.

131402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131402031 is about 11463.0724938823. The cubic root of 131402031 is about 508.3943233340.

Adding to 131402031 its reverse (130204131), we get a palindrome (261606162).

The spelling of 131402031 in words is "one hundred thirty-one million, four hundred two thousand, thirty-one".