1031123110231 has 4 divisors (see below), whose sum is σ = 1031410895872. Its totient is φ = 1030835324592.

The previous prime is 1031123110207. The next prime is 1031123110267. The reversal of 1031123110231 is 1320113211301.

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 1031123110231 - 2³⁷ = 893684156759 is a prime.

It is a super-2 number, since 2×1031123110231² (a number of 25 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 = 1031123110199 and 1031123110208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031123110291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143887446 + ... + 143894611.

It is an arithmetic number, because the mean of its divisors is an integer number (257852723968).

Almost surely, 2^{1031123110231} is an apocalyptic number.

1031123110231 is a deficient number, since it is larger than the sum of its proper divisors (287785641).

1031123110231 is an equidigital number, since it uses as much as digits as its factorization.

1031123110231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287785640.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031123110231 its reverse (1320113211301), we get a palindrome (2351236321532).

The spelling of 1031123110231 in words is "one trillion, thirty-one billion, one hundred twenty-three million, one hundred ten thousand, two hundred thirty-one".