31231102203 has 80 divisors (see below), whose sum is σ = 56554122240. Its totient is φ = 16767108864.

The previous prime is 31231102193. The next prime is 31231102213. The reversal of 31231102203 is 30220113213.

It is an interprime number because it is at equal distance from previous prime (31231102193) and next prime (31231102213).

It is not a de Polignac number, because 31231102203 - 2⁵ = 31231102171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31231102213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6195358 + ... + 6200396.

It is an arithmetic number, because the mean of its divisors is an integer number (706926528).

Almost surely, 2^31231102203 is an apocalyptic number.

31231102203 is a deficient number, since it is larger than the sum of its proper divisors (25323020037).

31231102203 is a wasteful number, since it uses less digits than its factorization.

31231102203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5718 (or 5709 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31231102203 its reverse (30220113213), we get a palindrome (61451215416).

The spelling of 31231102203 in words is "thirty-one billion, two hundred thirty-one million, one hundred two thousand, two hundred three".