131518531894 has 8 divisors (see below), whose sum is σ = 197285347728. Its totient is φ = 65756749320.

The previous prime is 131518531871. The next prime is 131518531901. The reversal of 131518531894 is 498135815131.

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

It is a congruent number.

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, 1192297 + ... + 1297924.

It is an arithmetic number, because the mean of its divisors is an integer number (24660668466).

Almost surely, 2^131518531894 is an apocalyptic number.

131518531894 is a deficient number, since it is larger than the sum of its proper divisors (65766815834).

131518531894 is a wasteful number, since it uses less digits than its factorization.

131518531894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516630.

The product of its digits is 518400, while the sum is 49.

The spelling of 131518531894 in words is "one hundred thirty-one billion, five hundred eighteen million, five hundred thirty-one thousand, eight hundred ninety-four".