331322487139 has 20 divisors (see below), whose sum is σ = 409256418024. Its totient is φ = 267285334848.

The previous prime is 331322487137. The next prime is 331322487151. The reversal of 331322487139 is 931784223133.

It is not a de Polignac number, because 331322487139 - 2¹ = 331322487137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331322487131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4017817 + ... + 4099450.

Almost surely, 2^331322487139 is an apocalyptic number.

331322487139 is a deficient number, since it is larger than the sum of its proper divisors (77933930885).

331322487139 is an frugal number, since it uses more digits than its factorization.

331322487139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8117312 (or 8117291 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The spelling of 331322487139 in words is "three hundred thirty-one billion, three hundred twenty-two million, four hundred eighty-seven thousand, one hundred thirty-nine".