220134623 has 2 divisors, whose sum is σ = 220134624. Its totient is φ = 220134622.

The previous prime is 220134619. The next prime is 220134637. The reversal of 220134623 is 326431022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220134623 - 2² = 220134619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220134643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110067311 + 110067312.

It is an arithmetic number, because the mean of its divisors is an integer number (110067312).

Almost surely, 2^220134623 is an apocalyptic number.

220134623 is a deficient number, since it is larger than the sum of its proper divisors (1).

220134623 is an equidigital number, since it uses as much as digits as its factorization.

220134623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 220134623 is about 14836.9344205601. The cubic root of 220134623 is about 603.8041839615.

Adding to 220134623 its reverse (326431022), we get a palindrome (546565645).

The spelling of 220134623 in words is "two hundred twenty million, one hundred thirty-four thousand, six hundred twenty-three".