231246649 has 2 divisors, whose sum is σ = 231246650. Its totient is φ = 231246648.

The previous prime is 231246643. The next prime is 231246679. The reversal of 231246649 is 946642132.

It is a happy number.

231246649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210453049 + 20793600 = 14507^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 231246649 - 2³ = 231246641 is a prime.

It is not a weakly prime, because it can be changed into another prime (231246641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115623324 + 115623325.

It is an arithmetic number, because the mean of its divisors is an integer number (115623325).

Almost surely, 2^231246649 is an apocalyptic number.

It is an amenable number.

231246649 is a deficient number, since it is larger than the sum of its proper divisors (1).

231246649 is an equidigital number, since it uses as much as digits as its factorization.

231246649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 231246649 is about 15206.7961451451. The cubic root of 231246649 is about 613.7975482594.

The spelling of 231246649 in words is "two hundred thirty-one million, two hundred forty-six thousand, six hundred forty-nine".