243232031 has 12 divisors (see below), whose sum is σ = 283285440. Its totient is φ = 208232640.

The previous prime is 243232027. The next prime is 243232103. The reversal of 243232031 is 130232342.

It is not a de Polignac number, because 243232031 - 2² = 243232027 is a prime.

It is a super-2 number, since 2×243232031² = 118323641808769922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243231994 and 243232012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243232001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46055 + ... + 51063.

It is an arithmetic number, because the mean of its divisors is an integer number (23607120).

Almost surely, 2^243232031 is an apocalyptic number.

243232031 is a deficient number, since it is larger than the sum of its proper divisors (40053409).

243232031 is an equidigital number, since it uses as much as digits as its factorization.

243232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6014 (or 6007 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 243232031 is about 15595.8978901505. The cubic root of 243232031 is about 624.2237026324.

Adding to 243232031 its reverse (130232342), we get a palindrome (373464373).

The spelling of 243232031 in words is "two hundred forty-three million, two hundred thirty-two thousand, thirty-one".