31220440304123 has 32 divisors (see below), whose sum is σ = 35826178590720. Its totient is φ = 26651358720000.

The previous prime is 31220440304111. The next prime is 31220440304213. The reversal of 31220440304123 is 32140304402213.

It is not a de Polignac number, because 31220440304123 - 2¹⁶ = 31220440238587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31220440304623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7309864478 + ... + 7309868748.

It is an arithmetic number, because the mean of its divisors is an integer number (1119568080960).

Almost surely, 2^{31220440304123} is an apocalyptic number.

31220440304123 is a deficient number, since it is larger than the sum of its proper divisors (4605738286597).

31220440304123 is a wasteful number, since it uses less digits than its factorization.

31220440304123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7979.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31220440304123 its reverse (32140304402213), we get a palindrome (63360744706336).

The spelling of 31220440304123 in words is "thirty-one trillion, two hundred twenty billion, four hundred forty million, three hundred four thousand, one hundred twenty-three".