31312421303 has 8 divisors (see below), whose sum is σ = 31353827328. Its totient is φ = 31271043544.

The previous prime is 31312421291. The next prime is 31312421323. The reversal of 31312421303 is 30312421313.

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

It is not a de Polignac number, because 31312421303 - 2⁸ = 31312421047 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 (31312421323) 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, 2987450 + ... + 2997912.

It is an arithmetic number, because the mean of its divisors is an integer number (3919228416).

Almost surely, 2^31312421303 is an apocalyptic number.

31312421303 is a deficient number, since it is larger than the sum of its proper divisors (41406025).

31312421303 is a wasteful number, since it uses less digits than its factorization.

31312421303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14133.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31312421303 its reverse (30312421313), we get a palindrome (61624842616).

The spelling of 31312421303 in words is "thirty-one billion, three hundred twelve million, four hundred twenty-one thousand, three hundred three".