1031223311331 has 16 divisors (see below), whose sum is σ = 1413979804800. Its totient is φ = 668236361408.

The previous prime is 1031223311303. The next prime is 1031223311351. The reversal of 1031223311331 is 1331133221301.

It is a cyclic number.

It is not a de Polignac number, because 1031223311331 - 2⁷ = 1031223311203 is a prime.

It is a super-2 number, since 2×1031223311331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1031223311351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32715261 + ... + 32746766.

It is an arithmetic number, because the mean of its divisors is an integer number (88373737800).

Almost surely, 2^{1031223311331} is an apocalyptic number.

1031223311331 is a deficient number, since it is larger than the sum of its proper divisors (382756493469).

1031223311331 is an equidigital number, since it uses as much as digits as its factorization.

1031223311331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65462178.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1031223311331 its reverse (1331133221301), we get a palindrome (2362356532632).

The spelling of 1031223311331 in words is "one trillion, thirty-one billion, two hundred twenty-three million, three hundred eleven thousand, three hundred thirty-one".