222163431 has 16 divisors (see below), whose sum is σ = 340781568. Its totient is φ = 126108000.

The previous prime is 222163423. The next prime is 222163471. The reversal of 222163431 is 134361222.

It is not a de Polignac number, because 222163431 - 2³ = 222163423 is a prime.

It is a super-2 number, since 2×222163431² = 98713180147383522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222163471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31860 + ... + 38201.

It is an arithmetic number, because the mean of its divisors is an integer number (21298848).

Almost surely, 2^222163431 is an apocalyptic number.

222163431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222163431 is a deficient number, since it is larger than the sum of its proper divisors (118618137).

222163431 is a wasteful number, since it uses less digits than its factorization.

222163431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70222.

The product of its digits is 1728, while the sum is 24.

The square root of 222163431 is about 14905.1478020179. The cubic root of 222163431 is about 605.6534441959.

The spelling of 222163431 in words is "two hundred twenty-two million, one hundred sixty-three thousand, four hundred thirty-one".