156423623 has 2 divisors, whose sum is σ = 156423624. Its totient is φ = 156423622.

The previous prime is 156423587. The next prime is 156423629. The reversal of 156423623 is 326324651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 156423623 - 2⁶ = 156423559 is a prime.

It is a super-2 number, since 2×156423623² = 48936699664892258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 156423623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156423629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78211811 + 78211812.

It is an arithmetic number, because the mean of its divisors is an integer number (78211812).

Almost surely, 2^156423623 is an apocalyptic number.

156423623 is a deficient number, since it is larger than the sum of its proper divisors (1).

156423623 is an equidigital number, since it uses as much as digits as its factorization.

156423623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 156423623 is about 12506.9429917946. The cubic root of 156423623 is about 538.8080970144.

The spelling of 156423623 in words is "one hundred fifty-six million, four hundred twenty-three thousand, six hundred twenty-three".