40313122431220 has 24 divisors (see below), whose sum is σ = 84711171837600. Its totient is φ = 16115036642592.

The previous prime is 40313122431217. The next prime is 40313122431251. The reversal of 40313122431220 is 2213422131304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638238250 + ... + 638301409.

It is an arithmetic number, because the mean of its divisors is an integer number (3529632159900).

Almost surely, 2^{40313122431220} is an apocalyptic number.

It is an amenable number.

40313122431220 is an abundant number, since it is smaller than the sum of its proper divisors (44398049406380).

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

40313122431220 is a wasteful number, since it uses less digits than its factorization.

40313122431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276541247 (or 1276541245 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 40313122431220 its reverse (2213422131304), we get a palindrome (42526544562524).

The spelling of 40313122431220 in words is "forty trillion, three hundred thirteen billion, one hundred twenty-two million, four hundred thirty-one thousand, two hundred twenty".