31332312132101 has 4 divisors (see below), whose sum is σ = 31332507741900. Its totient is φ = 31332116522304.

The previous prime is 31332312132067. The next prime is 31332312132181. The reversal of 31332312132101 is 10123121323313.

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 23579512303876 + 7752799828225 = 4855874^2 + 2784385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31332312132101 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 (31332312132181) 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, 97564436 + ... + 97885053.

It is an arithmetic number, because the mean of its divisors is an integer number (7833126935475).

Almost surely, 2^{31332312132101} is an apocalyptic number.

It is an amenable number.

31332312132101 is a deficient number, since it is larger than the sum of its proper divisors (195609799).

31332312132101 is a wasteful number, since it uses less digits than its factorization.

31332312132101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195609798.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31332312132101 its reverse (10123121323313), we get a palindrome (41455433455414).

The spelling of 31332312132101 in words is "thirty-one trillion, three hundred thirty-two billion, three hundred twelve million, one hundred thirty-two thousand, one hundred one".