1312223231112 has 32 divisors (see below), whose sum is σ = 3283408327680. Its totient is φ = 437027710400.

The previous prime is 1312223231029. The next prime is 1312223231129. The reversal of 1312223231112 is 2111323222131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23723883 + ... + 23779130.

It is an arithmetic number, because the mean of its divisors is an integer number (102606510240).

Almost surely, 2^{1312223231112} is an apocalyptic number.

1312223231112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312223231112 is an abundant number, since it is smaller than the sum of its proper divisors (1971185096568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312223231112 is a wasteful number, since it uses less digits than its factorization.

1312223231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47504173 (or 47504169 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 1312223231112 its reverse (2111323222131), we get a palindrome (3423546453243).

The spelling of 1312223231112 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, two hundred thirty-one thousand, one hundred twelve".