1311215512304 has 20 divisors (see below), whose sum is σ = 2541320532576. Its totient is φ = 655390858752.

The previous prime is 1311215512303. The next prime is 1311215512351. The reversal of 1311215512304 is 4032155121131.

It is a happy number.

It is a super-2 number, since 2×1311215512304² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311215512303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13506209 + ... + 13602944.

Almost surely, 2^{1311215512304} is an apocalyptic number.

It is an amenable number.

1311215512304 is a deficient number, since it is larger than the sum of its proper divisors (1230105020272).

1311215512304 is a wasteful number, since it uses less digits than its factorization.

1311215512304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27112184 (or 27112178 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 1311215512304 in words is "one trillion, three hundred eleven billion, two hundred fifteen million, five hundred twelve thousand, three hundred four".