131171247402 has 32 divisors (see below), whose sum is σ = 282592101120. Its totient is φ = 40350467520.

The previous prime is 131171247401. The next prime is 131171247409. The reversal of 131171247402 is 204742171131.

It is a super-2 number, since 2×131171247402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131171247401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116124 + ... + 525192.

It is an arithmetic number, because the mean of its divisors is an integer number (8831003160).

Almost surely, 2^131171247402 is an apocalyptic number.

131171247402 is an abundant number, since it is smaller than the sum of its proper divisors (151420853718).

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

131171247402 is a wasteful number, since it uses less digits than its factorization.

131171247402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413198.

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 131171247402 in words is "one hundred thirty-one billion, one hundred seventy-one million, two hundred forty-seven thousand, four hundred two".