131515747242 has 48 divisors (see below), whose sum is σ = 306124189056. Its totient is φ = 37508944000.

The previous prime is 131515747213. The next prime is 131515747261. The reversal of 131515747242 is 242747515131.

It is a junction number, because it is equal to n+sod(n) for n = 131515747194 and 131515747203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5315634 + ... + 5340317.

It is an arithmetic number, because the mean of its divisors is an integer number (6377587272).

Almost surely, 2^131515747242 is an apocalyptic number.

131515747242 is an abundant number, since it is smaller than the sum of its proper divisors (174608441814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131515747242 is a wasteful number, since it uses less digits than its factorization.

131515747242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655995 (or 10655984 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The spelling of 131515747242 in words is "one hundred thirty-one billion, five hundred fifteen million, seven hundred forty-seven thousand, two hundred forty-two".