31304613421 has 8 divisors (see below), whose sum is σ = 32217822720. Its totient is φ = 30394937808.

The previous prime is 31304613359. The next prime is 31304613443. The reversal of 31304613421 is 12431640313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31304613421 - 2⁹ = 31304612909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31304613421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304613491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865441 + ... + 900886.

It is an arithmetic number, because the mean of its divisors is an integer number (4027227840).

Almost surely, 2^31304613421 is an apocalyptic number.

It is an amenable number.

31304613421 is a deficient number, since it is larger than the sum of its proper divisors (913209299).

31304613421 is a wasteful number, since it uses less digits than its factorization.

31304613421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766843.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 31304613421 in words is "thirty-one billion, three hundred four million, six hundred thirteen thousand, four hundred twenty-one".