131518531922 has 8 divisors (see below), whose sum is σ = 197863192956. Its totient is φ = 65564134272.

The previous prime is 131518531913. The next prime is 131518531951. The reversal of 131518531922 is 229135815131.

It can be written as a sum of positive squares in 2 ways, for example, as 126735288001 + 4783243921 = 355999^2 + 69161^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 131518531922.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97565003 + ... + 97566350.

Almost surely, 2^131518531922 is an apocalyptic number.

131518531922 is a deficient number, since it is larger than the sum of its proper divisors (66344661034).

131518531922 is a wasteful number, since it uses less digits than its factorization.

131518531922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195131692.

The product of its digits is 64800, while the sum is 41.

The spelling of 131518531922 in words is "one hundred thirty-one billion, five hundred eighteen million, five hundred thirty-one thousand, nine hundred twenty-two".