1231930223 has 2 divisors, whose sum is σ = 1231930224. Its totient is φ = 1231930222.

The previous prime is 1231930213. The next prime is 1231930247. The reversal of 1231930223 is 3220391321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231930223 - 2⁸ = 1231929967 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231930192 and 1231930201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231930213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615965111 + 615965112.

It is an arithmetic number, because the mean of its divisors is an integer number (615965112).

Almost surely, 2^1231930223 is an apocalyptic number.

1231930223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231930223 is an equidigital number, since it uses as much as digits as its factorization.

1231930223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1231930223 is about 35098.8635571011. The cubic root of 1231930223 is about 1072.0014430510.

The spelling of 1231930223 in words is "one billion, two hundred thirty-one million, nine hundred thirty thousand, two hundred twenty-three".