131971463 has 8 divisors (see below), whose sum is σ = 144125856. Its totient is φ = 120103200.

The previous prime is 131971453. The next prime is 131971481. The reversal of 131971463 is 364179131.

It is a happy number.

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 131971463 - 2²⁰ = 130922887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131971403) 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, 70568 + ... + 72413.

It is an arithmetic number, because the mean of its divisors is an integer number (18015732).

Almost surely, 2^131971463 is an apocalyptic number.

131971463 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131971463 is a deficient number, since it is larger than the sum of its proper divisors (12154393).

131971463 is a wasteful number, since it uses less digits than its factorization.

131971463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143065.

The product of its digits is 13608, while the sum is 35.

The square root of 131971463 is about 11487.8833124297. The cubic root of 131971463 is about 509.1276423450.

The spelling of 131971463 in words is "one hundred thirty-one million, nine hundred seventy-one thousand, four hundred sixty-three".