1312013212 has 12 divisors (see below), whose sum is σ = 2303408016. Its totient is φ = 653896640.

The previous prime is 1312013203. The next prime is 1312013221. The reversal of 1312013212 is 2123102131.

It is an interprime number because it is at equal distance from previous prime (1312013203) and next prime (1312013221).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526093 + ... + 528580.

It is an arithmetic number, because the mean of its divisors is an integer number (191950668).

Almost surely, 2^1312013212 is an apocalyptic number.

It is an amenable number.

1312013212 is a deficient number, since it is larger than the sum of its proper divisors (991394804).

1312013212 is a wasteful number, since it uses less digits than its factorization.

1312013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054988 (or 1054986 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1312013212 is about 36221.7229297558. The cubic root of 1312013212 is about 1094.7444096716.

Adding to 1312013212 its reverse (2123102131), we get a palindrome (3435115343).

The spelling of 1312013212 in words is "one billion, three hundred twelve million, thirteen thousand, two hundred twelve".