1313013212 has 36 divisors (see below), whose sum is σ = 2681749224. Its totient is φ = 560861280.

The previous prime is 1313013209. The next prime is 1313013217. The reversal of 1313013212 is 2123103131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313013217) 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, 49262 + ... + 71082.

It is an arithmetic number, because the mean of its divisors is an integer number (74493034).

Almost surely, 2^1313013212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313013212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1340874612).

1313013212 is an abundant number, since it is smaller than the sum of its proper divisors (1368736012).

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

1313013212 is a wasteful number, since it uses less digits than its factorization.

1313013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22146 (or 22137 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1313013212 is about 36235.5241717296. The cubic root of 1313013212 is about 1095.0224725203.

Adding to 1313013212 its reverse (2123103131), we get a palindrome (3436116343).

The spelling of 1313013212 in words is "one billion, three hundred thirteen million, thirteen thousand, two hundred twelve".