31222231023 has 16 divisors (see below), whose sum is σ = 43880516480. Its totient is φ = 19692375264.

The previous prime is 31222231021. The next prime is 31222231037. The reversal of 31222231023 is 32013222213.

It is a happy number.

It is not a de Polignac number, because 31222231023 - 2¹ = 31222231021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222231021) 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, 331861 + ... + 415422.

It is an arithmetic number, because the mean of its divisors is an integer number (2742532280).

Almost surely, 2^31222231023 is an apocalyptic number.

31222231023 is a deficient number, since it is larger than the sum of its proper divisors (12658285457).

31222231023 is a wasteful number, since it uses less digits than its factorization.

31222231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748038.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31222231023 its reverse (32013222213), we get a palindrome (63235453236).

The spelling of 31222231023 in words is "thirty-one billion, two hundred twenty-two million, two hundred thirty-one thousand, twenty-three".