31220223331023 has 12 divisors (see below), whose sum is σ = 45322490600400. Its totient is φ = 20708891856576.

The previous prime is 31220223330997. The next prime is 31220223331027. The reversal of 31220223331023 is 32013332202213.

31220223331023 is a `hidden beast` number, since 3 + 1 + 220 + 2 + 2 + 333 + 102 + 3 = 666.

It is not a de Polignac number, because 31220223331023 - 2⁸ = 31220223330767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220223331027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8715861786 + ... + 8715865367.

It is an arithmetic number, because the mean of its divisors is an integer number (3776874216700).

Almost surely, 2^{31220223331023} is an apocalyptic number.

31220223331023 is a deficient number, since it is larger than the sum of its proper divisors (14102267269377).

31220223331023 is a wasteful number, since it uses less digits than its factorization.

31220223331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17431727358 (or 17431727355 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 31220223331023 its reverse (32013332202213), we get a palindrome (63233555533236).

The spelling of 31220223331023 in words is "thirty-one trillion, two hundred twenty billion, two hundred twenty-three million, three hundred thirty-one thousand, twenty-three".