31303210113103 has 4 divisors (see below), whose sum is σ = 31303241100360. Its totient is φ = 31303179125848.

The previous prime is 31303210113061. The next prime is 31303210113113. The reversal of 31303210113103 is 30131101230313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31303210113103 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 (31303210113113) 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, 13925425 + ... + 16016362.

It is an arithmetic number, because the mean of its divisors is an integer number (7825810275090).

Almost surely, 2^{31303210113103} is an apocalyptic number.

31303210113103 is a deficient number, since it is larger than the sum of its proper divisors (30987257).

31303210113103 is a wasteful number, since it uses less digits than its factorization.

31303210113103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30987256.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31303210113103 its reverse (30131101230313), we get a palindrome (61434311343416).

The spelling of 31303210113103 in words is "thirty-one trillion, three hundred three billion, two hundred ten million, one hundred thirteen thousand, one hundred three".