1031223122231 has 4 divisors (see below), whose sum is σ = 1035726280200. Its totient is φ = 1026719964264.

The previous prime is 1031223122227. The next prime is 1031223122291. The reversal of 1031223122231 is 1322213221301.

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 1031223122231 - 2² = 1031223122227 is a prime.

It is a super-2 number, since 2×1031223122231² (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 = 1031223122197 and 1031223122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031223122221) 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, 2251578641 + ... + 2251579098.

It is an arithmetic number, because the mean of its divisors is an integer number (258931570050).

Almost surely, 2^{1031223122231} is an apocalyptic number.

1031223122231 is a deficient number, since it is larger than the sum of its proper divisors (4503157969).

1031223122231 is an equidigital number, since it uses as much as digits as its factorization.

1031223122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503157968.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1031223122231 its reverse (1322213221301), we get a palindrome (2353436343532).

The spelling of 1031223122231 in words is "one trillion, thirty-one billion, two hundred twenty-three million, one hundred twenty-two thousand, two hundred thirty-one".