131409431769 has 32 divisors (see below), whose sum is σ = 218593152000. Its totient is φ = 68218920000.

The previous prime is 131409431761. The next prime is 131409431789. The reversal of 131409431769 is 967134904131.

It is not a de Polignac number, because 131409431769 - 2³ = 131409431761 is a prime.

It is a super-2 number, since 2×131409431769² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131409431761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156519 + ... + 536019.

It is an arithmetic number, because the mean of its divisors is an integer number (6831036000).

Almost surely, 2^131409431769 is an apocalyptic number.

It is an amenable number.

131409431769 is a deficient number, since it is larger than the sum of its proper divisors (87183720231).

131409431769 is a wasteful number, since it uses less digits than its factorization.

131409431769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381021.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 131409431769 in words is "one hundred thirty-one billion, four hundred nine million, four hundred thirty-one thousand, seven hundred sixty-nine".