31112202101031 has 12 divisors (see below), whose sum is σ = 45041291836008. Its totient is φ = 20694647595024.

The previous prime is 31112202101009. The next prime is 31112202101039. The reversal of 31112202101031 is 13010120221113.

31112202101031 is a `hidden beast` number, since 311 + 1 + 220 + 2 + 101 + 0 + 31 = 666.

It is not a de Polignac number, because 31112202101031 - 2²⁶ = 31112134992167 is a prime.

It is a super-2 number, since 2×31112202101031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31112202100995 and 31112202101013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112202101039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3901701820 + ... + 3901709793.

It is an arithmetic number, because the mean of its divisors is an integer number (3753440986334).

Almost surely, 2^{31112202101031} is an apocalyptic number.

31112202101031 is a deficient number, since it is larger than the sum of its proper divisors (13929089734977).

31112202101031 is a wasteful number, since it uses less digits than its factorization.

31112202101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803412062 (or 7803412059 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 31112202101031 its reverse (13010120221113), we get a palindrome (44122322322144).

The spelling of 31112202101031 in words is "thirty-one trillion, one hundred twelve billion, two hundred two million, one hundred one thousand, thirty-one".