131564802381 has 8 divisors (see below), whose sum is σ = 179499265440. Its totient is φ = 85670103792.

The previous prime is 131564802361. The next prime is 131564802407. The reversal of 131564802381 is 183208465131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131564802381 - 2⁵ = 131564802349 is a prime.

It is a super-2 number, since 2×131564802381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131564802361) 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, 509940966 + ... + 509941223.

It is an arithmetic number, because the mean of its divisors is an integer number (22437408180).

Almost surely, 2^131564802381 is an apocalyptic number.

It is an amenable number.

131564802381 is a deficient number, since it is larger than the sum of its proper divisors (47934463059).

131564802381 is a wasteful number, since it uses less digits than its factorization.

131564802381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019882235.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 131564802381 in words is "one hundred thirty-one billion, five hundred sixty-four million, eight hundred two thousand, three hundred eighty-one".