131521453967 has 8 divisors (see below), whose sum is σ = 135181747200. Its totient is φ = 127866721824.

The previous prime is 131521453939. The next prime is 131521453993. The reversal of 131521453967 is 769354125131.

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 131521453967 - 2¹⁶ = 131521388431 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 (131521453937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1342292 + ... + 1436937.

It is an arithmetic number, because the mean of its divisors is an integer number (16897718400).

Almost surely, 2^131521453967 is an apocalyptic number.

131521453967 is a deficient number, since it is larger than the sum of its proper divisors (3660293233).

131521453967 is a wasteful number, since it uses less digits than its factorization.

131521453967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780545.

The product of its digits is 680400, while the sum is 47.

The spelling of 131521453967 in words is "one hundred thirty-one billion, five hundred twenty-one million, four hundred fifty-three thousand, nine hundred sixty-seven".