231103323031 has 4 divisors (see below), whose sum is σ = 264118083472. Its totient is φ = 198088562592.

The previous prime is 231103323007. The next prime is 231103323071. The reversal of 231103323031 is 130323301132.

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 231103323031 - 2¹³ = 231103314839 is a prime.

It is a super-2 number, since 2×231103323031² (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 = 231103322993 and 231103323011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231103323071) 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, 16507380210 + ... + 16507380223.

It is an arithmetic number, because the mean of its divisors is an integer number (66029520868).

Almost surely, 2^231103323031 is an apocalyptic number.

231103323031 is a deficient number, since it is larger than the sum of its proper divisors (33014760441).

231103323031 is an equidigital number, since it uses as much as digits as its factorization.

231103323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33014760440.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 231103323031 its reverse (130323301132), we get a palindrome (361426624163).

The spelling of 231103323031 in words is "two hundred thirty-one billion, one hundred three million, three hundred twenty-three thousand, thirty-one".