1031330123231 has 2 divisors, whose sum is σ = 1031330123232. Its totient is φ = 1031330123230.

The previous prime is 1031330123207. The next prime is 1031330123269. The reversal of 1031330123231 is 1323210331301.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031330123231 is a prime.

It is a super-2 number, since 2×1031330123231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031330123197 and 1031330123206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031330123531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515665061615 + 515665061616.

It is an arithmetic number, because the mean of its divisors is an integer number (515665061616).

Almost surely, 2^{1031330123231} is an apocalyptic number.

1031330123231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031330123231 is an equidigital number, since it uses as much as digits as its factorization.

1031330123231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1031330123231 its reverse (1323210331301), we get a palindrome (2354540454532).

The spelling of 1031330123231 in words is "one trillion, thirty-one billion, three hundred thirty million, one hundred twenty-three thousand, two hundred thirty-one".