131441631 has 4 divisors (see below), whose sum is σ = 175255512. Its totient is φ = 87627752.

The previous prime is 131441617. The next prime is 131441633. The reversal of 131441631 is 136144131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131441631 - 2⁵ = 131441599 is a prime.

It is a super-2 number, since 2×131441631² = 34553804719880322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131441633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21906936 + ... + 21906941.

It is an arithmetic number, because the mean of its divisors is an integer number (43813878).

Almost surely, 2^131441631 is an apocalyptic number.

131441631 is a deficient number, since it is larger than the sum of its proper divisors (43813881).

131441631 is an equidigital number, since it uses as much as digits as its factorization.

131441631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43813880.

The product of its digits is 864, while the sum is 24.

The square root of 131441631 is about 11464.7996493615. The cubic root of 131441631 is about 508.4453889910.

Adding to 131441631 its reverse (136144131), we get a palindrome (267585762).

The spelling of 131441631 in words is "one hundred thirty-one million, four hundred forty-one thousand, six hundred thirty-one".