31112332202101 has 4 divisors (see below), whose sum is σ = 31112396020332. Its totient is φ = 31112268383872.

The previous prime is 31112332202087. The next prime is 31112332202153. The reversal of 31112332202101 is 10120223321113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19121860851025 + 11990471351076 = 4372855^2 + 3462726^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112332202101 - 2⁴¹ = 28913308946549 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 (31112332202701) 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, 31172170 + ... + 32154763.

It is an arithmetic number, because the mean of its divisors is an integer number (7778099005083).

Almost surely, 2^{31112332202101} is an apocalyptic number.

It is an amenable number.

31112332202101 is a deficient number, since it is larger than the sum of its proper divisors (63818231).

31112332202101 is an equidigital number, since it uses as much as digits as its factorization.

31112332202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63818230.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31112332202101 its reverse (10120223321113), we get a palindrome (41232555523214).

The spelling of 31112332202101 in words is "thirty-one trillion, one hundred twelve billion, three hundred thirty-two million, two hundred two thousand, one hundred one".