30431132317 has 4 divisors (see below), whose sum is σ = 32032770880. Its totient is φ = 28829493756.

The previous prime is 30431132311. The next prime is 30431132351. The reversal of 30431132317 is 71323113403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30431132317 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 (30431132311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800819253 + ... + 800819290.

It is an arithmetic number, because the mean of its divisors is an integer number (8008192720).

Almost surely, 2^30431132317 is an apocalyptic number.

It is an amenable number.

30431132317 is a deficient number, since it is larger than the sum of its proper divisors (1601638563).

30431132317 is a wasteful number, since it uses less digits than its factorization.

30431132317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601638562.

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 30431132317 in words is "thirty billion, four hundred thirty-one million, one hundred thirty-two thousand, three hundred seventeen".