31312202122001 has 4 divisors (see below), whose sum is σ = 31436951931504. Its totient is φ = 31187452312500.

The previous prime is 31312202121997. The next prime is 31312202122013. The reversal of 31312202122001 is 10022120221313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31312202122001 - 2² = 31312202121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312202322001) 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, 62374904375 + ... + 62374904876.

It is an arithmetic number, because the mean of its divisors is an integer number (7859237982876).

Almost surely, 2^{31312202122001} is an apocalyptic number.

It is an amenable number.

31312202122001 is a deficient number, since it is larger than the sum of its proper divisors (124749809503).

31312202122001 is a wasteful number, since it uses less digits than its factorization.

31312202122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124749809502.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31312202122001 its reverse (10022120221313), we get a palindrome (41334322343314).

The spelling of 31312202122001 in words is "thirty-one trillion, three hundred twelve billion, two hundred two million, one hundred twenty-two thousand, one".