231504073 has 2 divisors, whose sum is σ = 231504074. Its totient is φ = 231504072.

The previous prime is 231504067. The next prime is 231504121. The reversal of 231504073 is 370405132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227165184 + 4338889 = 15072^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 231504073 - 2²¹ = 229406921 is a prime.

It is not a weakly prime, because it can be changed into another prime (231504043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115752036 + 115752037.

It is an arithmetic number, because the mean of its divisors is an integer number (115752037).

Almost surely, 2^231504073 is an apocalyptic number.

It is an amenable number.

231504073 is a deficient number, since it is larger than the sum of its proper divisors (1).

231504073 is an equidigital number, since it uses as much as digits as its factorization.

231504073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 231504073 is about 15215.2579011990. The cubic root of 231504073 is about 614.0252238114.

The spelling of 231504073 in words is "two hundred thirty-one million, five hundred four thousand, seventy-three".