31312310122001 has 4 divisors (see below), whose sum is σ = 31326853695972. Its totient is φ = 31297766548032.

The previous prime is 31312310121991. The next prime is 31312310122019. The reversal of 31312310122001 is 10022101321313.

It is a happy number.

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 4395098409601 + 26917211712400 = 2096449^2 + 5188180^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312310122001 - 2¹⁴ = 31312310105617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31312310122061) 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, 7271783756 + ... + 7271788061.

It is an arithmetic number, because the mean of its divisors is an integer number (7831713423993).

Almost surely, 2^{31312310122001} is an apocalyptic number.

It is an amenable number.

31312310122001 is a deficient number, since it is larger than the sum of its proper divisors (14543573971).

31312310122001 is a wasteful number, since it uses less digits than its factorization.

31312310122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14543573970.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31312310122001 its reverse (10022101321313), we get a palindrome (41334411443314).

The spelling of 31312310122001 in words is "thirty-one trillion, three hundred twelve billion, three hundred ten million, one hundred twenty-two thousand, one".