31121010022301 has 4 divisors (see below), whose sum is σ = 31121104110012. Its totient is φ = 31120915934592.

The previous prime is 31121010022283. The next prime is 31121010022439. The reversal of 31121010022301 is 10322001012113.

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 26897697317401 + 4223312704900 = 5186299^2 + 2055070^2 .

It is a cyclic number.

It is not a de Polignac number, because 31121010022301 - 2²² = 31121005827997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31121010022301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121010027301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46545950 + ... + 47209823.

It is an arithmetic number, because the mean of its divisors is an integer number (7780276027503).

Almost surely, 2^{31121010022301} is an apocalyptic number.

It is an amenable number.

31121010022301 is a deficient number, since it is larger than the sum of its proper divisors (94087711).

31121010022301 is an equidigital number, since it uses as much as digits as its factorization.

31121010022301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94087710.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31121010022301 its reverse (10322001012113), we get a palindrome (41443011034414).

The spelling of 31121010022301 in words is "thirty-one trillion, one hundred twenty-one billion, ten million, twenty-two thousand, three hundred one".