31423304054220 has 72 divisors (see below), whose sum is σ = 95273970429456. Its totient is φ = 7734967149312.

The previous prime is 31423304054203. The next prime is 31423304054239. The reversal of 31423304054220 is 2245040332413.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1549462447 + ... + 1549482726.

It is an arithmetic number, because the mean of its divisors is an integer number (1323249589298).

Almost surely, 2^{31423304054220} is an apocalyptic number.

31423304054220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31423304054220 is an abundant number, since it is smaller than the sum of its proper divisors (63850666375236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31423304054220 is a wasteful number, since it uses less digits than its factorization.

31423304054220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098945211 (or 3098945196 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 31423304054220 its reverse (2245040332413), we get a palindrome (33668344386633).

The spelling of 31423304054220 in words is "thirty-one trillion, four hundred twenty-three billion, three hundred four million, fifty-four thousand, two hundred twenty".