231252849 has 27 divisors (see below), whose sum is σ = 345827937. Its totient is φ = 148906944.

The previous prime is 231252841. The next prime is 231252863. The reversal of 231252849 is 948252132.

It is a happy number.

The square root of 231252849 is 15207.

It is a perfect power (a square), and thus also a powerful number.

231252849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61732449 + 169520400 = 7857^2 + 13020^2 .

It is not a de Polignac number, because 231252849 - 2³ = 231252841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231252841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1687909 + ... + 1688045.

Almost surely, 2^231252849 is an apocalyptic number.

231252849 is the 15207-th square number.

231252849 is the 7604-th centered octagonal number.

It is an amenable number.

231252849 is a deficient number, since it is larger than the sum of its proper divisors (114575088).

231252849 is an equidigital number, since it uses as much as digits as its factorization.

231252849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 177 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The cubic root of 231252849 is about 613.8030337598.

Multiplying 231252849 by its sum of digits (36), we get a square (8325102564 = 91242²).

The spelling of 231252849 in words is "two hundred thirty-one million, two hundred fifty-two thousand, eight hundred forty-nine".