231222849 has 32 divisors (see below), whose sum is σ = 364608384. Its totient is φ = 128494080.

The previous prime is 231222847. The next prime is 231222857. The reversal of 231222849 is 948222132.

It is not a de Polignac number, because 231222849 - 2¹ = 231222847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231222847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65637 + ... + 69069.

It is an arithmetic number, because the mean of its divisors is an integer number (11394012).

Almost surely, 2^231222849 is an apocalyptic number.

It is an amenable number.

231222849 is a deficient number, since it is larger than the sum of its proper divisors (133385535).

231222849 is a wasteful number, since it uses less digits than its factorization.

231222849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617.

The product of its digits is 13824, while the sum is 33.

The square root of 231222849 is about 15206.0135801597. The cubic root of 231222849 is about 613.7764901051.

The spelling of 231222849 in words is "two hundred thirty-one million, two hundred twenty-two thousand, eight hundred forty-nine".