923555231 has 2 divisors, whose sum is σ = 923555232. Its totient is φ = 923555230.

The previous prime is 923555203. The next prime is 923555233. The reversal of 923555231 is 132555329.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-923555231 is a prime.

It is a super-2 number, since 2×923555231² = 1705908529414926722, which contains 22 as substring.

Together with 923555233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 923555191 and 923555200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (923555233) 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, 461777615 + 461777616.

It is an arithmetic number, because the mean of its divisors is an integer number (461777616).

Almost surely, 2^923555231 is an apocalyptic number.

923555231 is a deficient number, since it is larger than the sum of its proper divisors (1).

923555231 is an equidigital number, since it uses as much as digits as its factorization.

923555231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 35.

The square root of 923555231 is about 30390.0515136121. The cubic root of 923555231 is about 973.8400339816.

The spelling of 923555231 in words is "nine hundred twenty-three million, five hundred fifty-five thousand, two hundred thirty-one".