31304503790989 has 32 divisors (see below), whose sum is σ = 37221678079488. Its totient is φ = 25953238080000.

The previous prime is 31304503790953. The next prime is 31304503791017. The reversal of 31304503790989 is 98909730540313.

It is not a de Polignac number, because 31304503790989 - 2⁹ = 31304503790477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304503790929) 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, 4346449 + ... + 9027769.

It is an arithmetic number, because the mean of its divisors is an integer number (1163177439984).

Almost surely, 2^{31304503790989} is an apocalyptic number.

It is an amenable number.

31304503790989 is a deficient number, since it is larger than the sum of its proper divisors (5917174288499).

31304503790989 is a wasteful number, since it uses less digits than its factorization.

31304503790989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681909.

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 31304503790989 in words is "thirty-one trillion, three hundred four billion, five hundred three million, seven hundred ninety thousand, nine hundred eighty-nine".