131102431 has 4 divisors (see below), whose sum is σ = 131144992. Its totient is φ = 131059872.

The previous prime is 131102393. The next prime is 131102459. The reversal of 131102431 is 134201131.

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 131102431 - 2⁷ = 131102303 is a prime.

It is a super-2 number, since 2×131102431² = 34375694828219522, 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 (131102471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16266 + ... + 22951.

It is an arithmetic number, because the mean of its divisors is an integer number (32786248).

Almost surely, 2^131102431 is an apocalyptic number.

131102431 is a deficient number, since it is larger than the sum of its proper divisors (42561).

131102431 is an equidigital number, since it uses as much as digits as its factorization.

131102431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42560.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131102431 is about 11449.9969868992. The cubic root of 131102431 is about 508.0076452752.

Adding to 131102431 its reverse (134201131), we get a palindrome (265303562).

The spelling of 131102431 in words is "one hundred thirty-one million, one hundred two thousand, four hundred thirty-one".