220431251242355 has 4 divisors (see below), whose sum is σ = 264517501490832. Its totient is φ = 176345000993880.

The previous prime is 220431251242331. The next prime is 220431251242403. The reversal of 220431251242355 is 553242152134022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220431251242355 - 2¹⁸ = 220431250980211 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22043125124231 + ... + 22043125124240.

It is an arithmetic number, because the mean of its divisors is an integer number (66129375372708).

Almost surely, 2^{220431251242355} is an apocalyptic number.

220431251242355 is a deficient number, since it is larger than the sum of its proper divisors (44086250248477).

220431251242355 is an equidigital number, since it uses as much as digits as its factorization.

220431251242355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44086250248476.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 220431251242355 in words is "two hundred twenty trillion, four hundred thirty-one billion, two hundred fifty-one million, two hundred forty-two thousand, three hundred fifty-five".