220431479 has 2 divisors, whose sum is σ = 220431480. Its totient is φ = 220431478.

The previous prime is 220431451. The next prime is 220431509. The reversal of 220431479 is 974134022.

220431479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220431479 - 2⁸ = 220431223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220431439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110215739 + 110215740.

It is an arithmetic number, because the mean of its divisors is an integer number (110215740).

Almost surely, 2^220431479 is an apocalyptic number.

220431479 is a deficient number, since it is larger than the sum of its proper divisors (1).

220431479 is an equidigital number, since it uses as much as digits as its factorization.

220431479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 220431479 is about 14846.9350035622. The cubic root of 220431479 is about 604.0754761096.

The spelling of 220431479 in words is "two hundred twenty million, four hundred thirty-one thousand, four hundred seventy-nine".