72230923 has 2 divisors, whose sum is σ = 72230924. Its totient is φ = 72230922.

The previous prime is 72230903. The next prime is 72230941. The reversal of 72230923 is 32903227.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72230923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72230891 and 72230900.

It is not a weakly prime, because it can be changed into another prime (72230903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36115461 + 36115462.

It is an arithmetic number, because the mean of its divisors is an integer number (36115462).

Almost surely, 2^72230923 is an apocalyptic number.

72230923 is a deficient number, since it is larger than the sum of its proper divisors (1).

72230923 is an equidigital number, since it uses as much as digits as its factorization.

72230923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 72230923 is about 8498.8777494443. The cubic root of 72230923 is about 416.4610484853.

It can be divided in two parts, 72230 and 923, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 72230923 in words is "seventy-two million, two hundred thirty thousand, nine hundred twenty-three".