1031223231031 has 4 divisors (see below), whose sum is σ = 1178540835472. Its totient is φ = 883905626592.

The previous prime is 1031223230993. The next prime is 1031223231061. The reversal of 1031223231031 is 1301323221301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031223231031 is a prime.

It is a super-2 number, since 2×1031223231031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031223230993 and 1031223231011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031223231061) 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, 73658802210 + ... + 73658802223.

It is an arithmetic number, because the mean of its divisors is an integer number (294635208868).

Almost surely, 2^{1031223231031} is an apocalyptic number.

1031223231031 is a deficient number, since it is larger than the sum of its proper divisors (147317604441).

1031223231031 is an equidigital number, since it uses as much as digits as its factorization.

1031223231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147317604440.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1031223231031 its reverse (1301323221301), we get a palindrome (2332546452332).

The spelling of 1031223231031 in words is "one trillion, thirty-one billion, two hundred twenty-three million, two hundred thirty-one thousand, thirty-one".