231321230330031 has 12 divisors (see below), whose sum is σ = 334143438463120. Its totient is φ = 154208258585280.

The previous prime is 231321230329997. The next prime is 231321230330093. The reversal of 231321230330031 is 130033032123132.

231321230330031 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 21 + 2 + 303 + 300 + 31 = 666.

231321230330031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231321230330031 - 2⁶ = 231321230329967 is a prime.

It is a super-2 number, since 2×231321230330031² (a number of 30 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 = 231321230329977 and 231321230330004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321230330231) 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, 490998811 + ... + 491469708.

Almost surely, 2^{231321230330031} is an apocalyptic number.

231321230330031 is a deficient number, since it is larger than the sum of its proper divisors (102822208133089).

231321230330031 is a wasteful number, since it uses less digits than its factorization.

231321230330031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982494686 (or 982494683 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 231321230330031 its reverse (130033032123132), we get a palindrome (361354262453163).

The spelling of 231321230330031 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, two hundred thirty million, three hundred thirty thousand, thirty-one".