220431251242431 has 12 divisors (see below), whose sum is σ = 320067715593600. Its totient is φ = 146184773946720.

The previous prime is 220431251242403. The next prime is 220431251242439. The reversal of 220431251242431 is 134242152134022.

220431251242431 is a `hidden beast` number, since 2 + 20 + 4 + 312 + 51 + 242 + 4 + 31 = 666.

It is not a de Polignac number, because 220431251242431 - 2⁹ = 220431251241919 is a prime.

It is a super-2 number, since 2×220431251242431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220431251242439) 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, 64116127206 + ... + 64116130643.

It is an arithmetic number, because the mean of its divisors is an integer number (26672309632800).

Almost surely, 2^{220431251242431} is an apocalyptic number.

220431251242431 is a deficient number, since it is larger than the sum of its proper divisors (99636464351169).

220431251242431 is a wasteful number, since it uses less digits than its factorization.

220431251242431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128232258046 (or 128232258043 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 220431251242431 in words is "two hundred twenty trillion, four hundred thirty-one billion, two hundred fifty-one million, two hundred forty-two thousand, four hundred thirty-one".