131964531 has 4 divisors (see below), whose sum is σ = 175952712. Its totient is φ = 87976352.

The previous prime is 131964517. The next prime is 131964571. The reversal of 131964531 is 135469131.

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 131964531 - 2⁶ = 131964467 is a prime.

It is a super-2 number, since 2×131964531² = 34829274884099922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131964492 and 131964501.

It is not an unprimeable number, because it can be changed into a prime (131964571) 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, 21994086 + ... + 21994091.

It is an arithmetic number, because the mean of its divisors is an integer number (43988178).

Almost surely, 2^131964531 is an apocalyptic number.

131964531 is a deficient number, since it is larger than the sum of its proper divisors (43988181).

131964531 is an equidigital number, since it uses as much as digits as its factorization.

131964531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43988180.

The product of its digits is 9720, while the sum is 33.

The square root of 131964531 is about 11487.5815992749. The cubic root of 131964531 is about 509.1187279567.

The spelling of 131964531 in words is "one hundred thirty-one million, nine hundred sixty-four thousand, five hundred thirty-one".