231210431 has 8 divisors (see below), whose sum is σ = 238876800. Its totient is φ = 223557120.

The previous prime is 231210409. The next prime is 231210443. The reversal of 231210431 is 134012132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-231210431 is a prime.

It is a super-2 number, since 2×231210431² = 106916526806411522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231210131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43655 + ... + 48663.

It is an arithmetic number, because the mean of its divisors is an integer number (29859600).

Almost surely, 2^231210431 is an apocalyptic number.

231210431 is a deficient number, since it is larger than the sum of its proper divisors (7666369).

231210431 is a wasteful number, since it uses less digits than its factorization.

231210431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231210431 is about 15205.6052493809. The cubic root of 231210431 is about 613.7655021297.

Adding to 231210431 its reverse (134012132), we get a palindrome (365222563).

The spelling of 231210431 in words is "two hundred thirty-one million, two hundred ten thousand, four hundred thirty-one".