31212122330023 has 16 divisors (see below), whose sum is σ = 32195317587840. Its totient is φ = 30245325537024.

The previous prime is 31212122330021. The next prime is 31212122330027. The reversal of 31212122330023 is 32003322121213.

It is a cyclic number.

It is not a de Polignac number, because 31212122330023 - 2¹ = 31212122330021 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 31212122330023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212122330021) 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, 6822511 + ... + 10438912.

It is an arithmetic number, because the mean of its divisors is an integer number (2012207349240).

Almost surely, 2^{31212122330023} is an apocalyptic number.

31212122330023 is a deficient number, since it is larger than the sum of its proper divisors (983195257817).

31212122330023 is a wasteful number, since it uses less digits than its factorization.

31212122330023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17261898.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31212122330023 its reverse (32003322121213), we get a palindrome (63215444451236).

The spelling of 31212122330023 in words is "thirty-one trillion, two hundred twelve billion, one hundred twenty-two million, three hundred thirty thousand, twenty-three".