231283649 has 2 divisors, whose sum is σ = 231283650. Its totient is φ = 231283648.

The previous prime is 231283621. The next prime is 231283711. The reversal of 231283649 is 946382132.

231283649 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., 194463025 + 36820624 = 13945^2 + 6068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231283649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231283609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115641824 + 115641825.

It is an arithmetic number, because the mean of its divisors is an integer number (115641825).

Almost surely, 2^231283649 is an apocalyptic number.

It is an amenable number.

231283649 is a deficient number, since it is larger than the sum of its proper divisors (1).

231283649 is an equidigital number, since it uses as much as digits as its factorization.

231283649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 231283649 is about 15208.0126578064. The cubic root of 231283649 is about 613.8302828572.

The spelling of 231283649 in words is "two hundred thirty-one million, two hundred eighty-three thousand, six hundred forty-nine".