133431018539 has 24 divisors (see below), whose sum is σ = 169169328720. Its totient is φ = 104299804224.

The previous prime is 133431018529. The next prime is 133431018571. The reversal of 133431018539 is 935810134331.

It is a de Polignac number, because none of the positive numbers 2^k-133431018539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133431018496 and 133431018505.

It is not an unprimeable number, because it can be changed into a prime (133431018509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1208984 + ... + 1314725.

It is an arithmetic number, because the mean of its divisors is an integer number (7048722030).

Almost surely, 2^133431018539 is an apocalyptic number.

133431018539 is a deficient number, since it is larger than the sum of its proper divisors (35738310181).

133431018539 is a wasteful number, since it uses less digits than its factorization.

133431018539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523819 (or 2523812 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 133431018539 in words is "one hundred thirty-three billion, four hundred thirty-one million, eighteen thousand, five hundred thirty-nine".