31012313201 has 4 divisors (see below), whose sum is σ = 31013872500. Its totient is φ = 31010753904.

The previous prime is 31012313179. The next prime is 31012313243. The reversal of 31012313201 is 10231321013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10231321013 = 2027 ⋅5047519.

It can be written as a sum of positive squares in 2 ways, for example, as 23661822976 + 7350490225 = 153824^2 + 85735^2 .

It is a cyclic number.

It is not a de Polignac number, because 31012313201 - 2²⁶ = 30945204337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31012313201.

It is not an unprimeable number, because it can be changed into a prime (31012313401) 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, 749426 + ... + 789723.

It is an arithmetic number, because the mean of its divisors is an integer number (7753468125).

Almost surely, 2^31012313201 is an apocalyptic number.

It is an amenable number.

31012313201 is a deficient number, since it is larger than the sum of its proper divisors (1559299).

31012313201 is a wasteful number, since it uses less digits than its factorization.

31012313201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559298.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31012313201 its reverse (10231321013), we get a palindrome (41243634214).

The spelling of 31012313201 in words is "thirty-one billion, twelve million, three hundred thirteen thousand, two hundred one".