1312223322231 has 12 divisors (see below), whose sum is σ = 1895868776152. Its totient is φ = 874614738096.

The previous prime is 1312223322211. The next prime is 1312223322251. The reversal of 1312223322231 is 1322233222131.

1312223322231 is a `hidden beast` number, since 1 + 312 + 2 + 2 + 3 + 322 + 23 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1312223322211) and next prime (1312223322251).

It is not a de Polignac number, because 1312223322231 - 2⁶ = 1312223322167 is a prime.

It is a super-2 number, since 2×1312223322231² (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 = 1312223322195 and 1312223322204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312223322211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16692781 + ... + 16771206.

Almost surely, 2^{1312223322231} is an apocalyptic number.

1312223322231 is a deficient number, since it is larger than the sum of its proper divisors (583645453921).

1312223322231 is a wasteful number, since it uses less digits than its factorization.

1312223322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33468350 (or 33468347 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 1312223322231 its reverse (1322233222131), we get a palindrome (2634456544362).

The spelling of 1312223322231 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, three hundred twenty-two thousand, two hundred thirty-one".