31312202312303 has 4 divisors (see below), whose sum is σ = 34158766158888. Its totient is φ = 28465638465720.

The previous prime is 31312202312219. The next prime is 31312202312317. The reversal of 31312202312303 is 30321320221313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31312202312303 - 2⁸ = 31312202312047 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 (31312202312603) 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, 1423281923276 + ... + 1423281923297.

It is an arithmetic number, because the mean of its divisors is an integer number (8539691539722).

Almost surely, 2^{31312202312303} is an apocalyptic number.

31312202312303 is a deficient number, since it is larger than the sum of its proper divisors (2846563846585).

31312202312303 is a wasteful number, since it uses less digits than its factorization.

31312202312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846563846584.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31312202312303 its reverse (30321320221313), we get a palindrome (61633522533616).

The spelling of 31312202312303 in words is "thirty-one trillion, three hundred twelve billion, two hundred two million, three hundred twelve thousand, three hundred three".