31222124441 has 2 divisors, whose sum is σ = 31222124442. Its totient is φ = 31222124440.

The previous prime is 31222124399. The next prime is 31222124473. The reversal of 31222124441 is 14442122213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31221476416 + 648025 = 176696^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 31222124441 - 2³⁴ = 14042255257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31222124441.

It is not a weakly prime, because it can be changed into another prime (31222124491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611062220 + 15611062221.

It is an arithmetic number, because the mean of its divisors is an integer number (15611062221).

Almost surely, 2^31222124441 is an apocalyptic number.

It is an amenable number.

31222124441 is a deficient number, since it is larger than the sum of its proper divisors (1).

31222124441 is an equidigital number, since it uses as much as digits as its factorization.

31222124441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 26.

Adding to 31222124441 its reverse (14442122213), we get a palindrome (45664246654).

The spelling of 31222124441 in words is "thirty-one billion, two hundred twenty-two million, one hundred twenty-four thousand, four hundred forty-one".