1312012233 has 12 divisors (see below), whose sum is σ = 2165861568. Its totient is φ = 749721240.

The previous prime is 1312012201. The next prime is 1312012241. The reversal of 1312012233 is 3322102131.

It is not a de Polignac number, because 1312012233 - 2⁵ = 1312012201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312012133) 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, 10412733 + ... + 10412858.

It is an arithmetic number, because the mean of its divisors is an integer number (180488464).

Almost surely, 2^1312012233 is an apocalyptic number.

It is an amenable number.

1312012233 is a deficient number, since it is larger than the sum of its proper divisors (853849335).

1312012233 is a wasteful number, since it uses less digits than its factorization.

1312012233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20825604 (or 20825601 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1312012233 is about 36221.7094157634. The cubic root of 1312012233 is about 1094.7441373788.

Adding to 1312012233 its reverse (3322102131), we get a palindrome (4634114364).

The spelling of 1312012233 in words is "one billion, three hundred twelve million, twelve thousand, two hundred thirty-three".