231433450 has 12 divisors (see below), whose sum is σ = 430466310. Its totient is φ = 92573360.

The previous prime is 231433421. The next prime is 231433453. The reversal of 231433450 is 54334132.

It can be written as a sum of positive squares in 3 ways, for example, as 132411049 + 99022401 = 11507^2 + 9951^2 .

It is a super-2 number, since 2×231433450² = 107122883557805000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (231433453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2314285 + ... + 2314384.

Almost surely, 2^231433450 is an apocalyptic number.

231433450 is a deficient number, since it is larger than the sum of its proper divisors (199032860).

231433450 is a wasteful number, since it uses less digits than its factorization.

231433450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628681 (or 4628676 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 231433450 is about 15212.9369288116. The cubic root of 231433450 is about 613.9627789580.

Adding to 231433450 its reverse (54334132), we get a palindrome (285767582).

The spelling of 231433450 in words is "two hundred thirty-one million, four hundred thirty-three thousand, four hundred fifty".