220307431 has 2 divisors, whose sum is σ = 220307432. Its totient is φ = 220307430.

The previous prime is 220307419. The next prime is 220307443. The reversal of 220307431 is 134703022.

It is a balanced prime because it is at equal distance from previous prime (220307419) and next prime (220307443).

It is a cyclic number.

It is not a de Polignac number, because 220307431 - 2⁷ = 220307303 is a prime.

It is a super-2 number, since 2×220307431² = 97070728307639522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220307401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110153715 + 110153716.

It is an arithmetic number, because the mean of its divisors is an integer number (110153716).

Almost surely, 2^220307431 is an apocalyptic number.

220307431 is a deficient number, since it is larger than the sum of its proper divisors (1).

220307431 is an equidigital number, since it uses as much as digits as its factorization.

220307431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 220307431 is about 14842.7568530917. The cubic root of 220307431 is about 603.9621401865.

The spelling of 220307431 in words is "two hundred twenty million, three hundred seven thousand, four hundred thirty-one".