231208723 has 2 divisors, whose sum is σ = 231208724. Its totient is φ = 231208722.

The previous prime is 231208711. The next prime is 231208741. The reversal of 231208723 is 327802132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231208723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231208691 and 231208700.

It is not a weakly prime, because it can be changed into another prime (231208123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115604361 + 115604362.

It is an arithmetic number, because the mean of its divisors is an integer number (115604362).

Almost surely, 2^231208723 is an apocalyptic number.

231208723 is a deficient number, since it is larger than the sum of its proper divisors (1).

231208723 is an equidigital number, since it uses as much as digits as its factorization.

231208723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 231208723 is about 15205.5490857779. The cubic root of 231208723 is about 613.7639907878.

The spelling of 231208723 in words is "two hundred thirty-one million, two hundred eight thousand, seven hundred twenty-three".