231442650 has 48 divisors (see below), whose sum is σ = 637756800. Its totient is φ = 61717680.

The previous prime is 231442639. The next prime is 231442657. The reversal of 231442650 is 56244132.

231442650 is a `hidden beast` number, since 2 + 3 + 1 + 4 + 4 + 2 + 650 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231442657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84370 + ... + 87069.

It is an arithmetic number, because the mean of its divisors is an integer number (13286600).

Almost surely, 2^231442650 is an apocalyptic number.

231442650 is an abundant number, since it is smaller than the sum of its proper divisors (406314150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231442650 is a wasteful number, since it uses less digits than its factorization.

231442650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171460 (or 171449 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 231442650 is about 15213.2393000307. The cubic root of 231442650 is about 613.9709143172.

Adding to 231442650 its reverse (56244132), we get a palindrome (287686782).

It can be divided in two parts, 2314426 and 50, that added together give a triangular number (2314476 = T₂₁₅₁).

The spelling of 231442650 in words is "two hundred thirty-one million, four hundred forty-two thousand, six hundred fifty".