128304797031 has 24 divisors (see below), whose sum is σ = 188911687536. Its totient is φ = 83884519680.

The previous prime is 128304797011. The next prime is 128304797039. The reversal of 128304797031 is 130797403821.

128304797031 is a `hidden beast` number, since 1 + 2 + 83 + 0 + 479 + 70 + 31 = 666.

It is not a de Polignac number, because 128304797031 - 2⁵ = 128304796999 is a prime.

It is a super-2 number, since 2×128304797031² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128304797039) 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, 1009951 + ... + 1129871.

It is an arithmetic number, because the mean of its divisors is an integer number (7871320314).

Almost surely, 2^128304797031 is an apocalyptic number.

128304797031 is a deficient number, since it is larger than the sum of its proper divisors (60606890505).

128304797031 is a wasteful number, since it uses less digits than its factorization.

128304797031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122223 (or 122220 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 128304797031 in words is "one hundred twenty-eight billion, three hundred four million, seven hundred ninety-seven thousand, thirty-one".