31102220443 has 16 divisors (see below), whose sum is σ = 37656728064. Its totient is φ = 25077248640.

The previous prime is 31102220407. The next prime is 31102220507. The reversal of 31102220443 is 34402220113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31102220443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31102224443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152178 + ... + 292168.

It is an arithmetic number, because the mean of its divisors is an integer number (2353545504).

Almost surely, 2^31102220443 is an apocalyptic number.

31102220443 is a deficient number, since it is larger than the sum of its proper divisors (6554507621).

31102220443 is a wasteful number, since it uses less digits than its factorization.

31102220443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141882.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31102220443 its reverse (34402220113), we get a palindrome (65504440556).

The spelling of 31102220443 in words is "thirty-one billion, one hundred two million, two hundred twenty thousand, four hundred forty-three".