231321110103031 has 32 divisors (see below), whose sum is σ = 270485898117120. Its totient is φ = 196126127243904.

The previous prime is 231321110103023. The next prime is 231321110103079. The reversal of 231321110103031 is 130301011123132.

231321110103031 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 231321110103031 - 2³ = 231321110103023 is a prime.

It is a super-2 number, since 2×231321110103031² (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 = 231321110102993 and 231321110103011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321110103731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154544071 + ... + 156033688.

It is an arithmetic number, because the mean of its divisors is an integer number (8452684316160).

Almost surely, 2^{231321110103031} is an apocalyptic number.

231321110103031 is a deficient number, since it is larger than the sum of its proper divisors (39164788014089).

231321110103031 is a wasteful number, since it uses less digits than its factorization.

231321110103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310577895.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 231321110103031 its reverse (130301011123132), we get a palindrome (361622121226163).

The spelling of 231321110103031 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, one hundred ten million, one hundred three thousand, thirty-one".