31312022130203 has 4 divisors (see below), whose sum is σ = 31341814730808. Its totient is φ = 31282229529600.

The previous prime is 31312022130163. The next prime is 31312022130209. The reversal of 31312022130203 is 30203122021313.

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-31312022130203 is a prime.

It is a super-3 number, since 3×31312022130203³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312022130209) 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, 14896298726 + ... + 14896300827.

It is an arithmetic number, because the mean of its divisors is an integer number (7835453682702).

Almost surely, 2^{31312022130203} is an apocalyptic number.

31312022130203 is a deficient number, since it is larger than the sum of its proper divisors (29792600605).

31312022130203 is a wasteful number, since it uses less digits than its factorization.

31312022130203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29792600604.

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

Adding to 31312022130203 its reverse (30203122021313), we get a palindrome (61515144151516).

The spelling of 31312022130203 in words is "thirty-one trillion, three hundred twelve billion, twenty-two million, one hundred thirty thousand, two hundred three".