1311209630212 has 6 divisors (see below), whose sum is σ = 2294616852878. Its totient is φ = 655604815104.

The previous prime is 1311209630201. The next prime is 1311209630219. The reversal of 1311209630212 is 2120369021131.

It can be written as a sum of positive squares in only one way, i.e., 994359974976 + 316849655236 = 997176^2 + 562894^2 .

It is not an unprimeable number, because it can be changed into a prime (1311209630219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163901203773 + ... + 163901203780.

Almost surely, 2^{1311209630212} is an apocalyptic number.

It is an amenable number.

1311209630212 is a deficient number, since it is larger than the sum of its proper divisors (983407222666).

1311209630212 is a wasteful number, since it uses less digits than its factorization.

1311209630212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327802407557 (or 327802407555 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 1311209630212 in words is "one trillion, three hundred eleven billion, two hundred nine million, six hundred thirty thousand, two hundred twelve".