231050433431 has 4 divisors (see below), whose sum is σ = 231060529632. Its totient is φ = 231040337232.

The previous prime is 231050433239. The next prime is 231050433487. The reversal of 231050433431 is 134334050132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231050433431 - 2²⁶ = 230983324567 is a prime.

It is a super-2 number, since 2×231050433431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231050433394 and 231050433403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231050433491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5013695 + ... + 5059568.

It is an arithmetic number, because the mean of its divisors is an integer number (57765132408).

Almost surely, 2^231050433431 is an apocalyptic number.

231050433431 is a deficient number, since it is larger than the sum of its proper divisors (10096201).

231050433431 is a wasteful number, since it uses less digits than its factorization.

231050433431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096200.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 231050433431 its reverse (134334050132), we get a palindrome (365384483563).

The spelling of 231050433431 in words is "two hundred thirty-one billion, fifty million, four hundred thirty-three thousand, four hundred thirty-one".