231223234031 has 8 divisors (see below), whose sum is σ = 239018716800. Its totient is φ = 223448793120.

The previous prime is 231223234013. The next prime is 231223234097. The reversal of 231223234031 is 130432322132.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231223234031 is a prime.

It is a super-2 number, since 2×231223234031² (a number of 24 digits) 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 (231223234331) 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, 5238116 + ... + 5282073.

It is an arithmetic number, because the mean of its divisors is an integer number (29877339600).

Almost surely, 2^231223234031 is an apocalyptic number.

231223234031 is a deficient number, since it is larger than the sum of its proper divisors (7795482769).

231223234031 is a wasteful number, since it uses less digits than its factorization.

231223234031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10520929.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 231223234031 its reverse (130432322132), we get a palindrome (361655556163).

The spelling of 231223234031 in words is "two hundred thirty-one billion, two hundred twenty-three million, two hundred thirty-four thousand, thirty-one".