231331049 has 2 divisors, whose sum is σ = 231331050. Its totient is φ = 231331048.

The previous prime is 231331007. The next prime is 231331069. The reversal of 231331049 is 940133132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198612649 + 32718400 = 14093^2 + 5720^2 .

It is a cyclic number.

It is not a de Polignac number, because 231331049 - 2⁸ = 231330793 is a prime.

It is not a weakly prime, because it can be changed into another prime (231331069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115665524 + 115665525.

It is an arithmetic number, because the mean of its divisors is an integer number (115665525).

Almost surely, 2^231331049 is an apocalyptic number.

It is an amenable number.

231331049 is a deficient number, since it is larger than the sum of its proper divisors (1).

231331049 is an equidigital number, since it uses as much as digits as its factorization.

231331049 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 231331049 is about 15209.5709669931. The cubic root of 231331049 is about 613.8722134305.

The spelling of 231331049 in words is "two hundred thirty-one million, three hundred thirty-one thousand, forty-nine".