1311620561112 has 64 divisors (see below), whose sum is σ = 3354596985600. Its totient is φ = 427222858880.

The previous prime is 1311620561093. The next prime is 1311620561161. The reversal of 1311620561112 is 2111650261131.

It is a super-3 number, since 3×1311620561112³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1311620561112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2536839 + ... + 3009782.

It is an arithmetic number, because the mean of its divisors is an integer number (52415577900).

Almost surely, 2^{1311620561112} is an apocalyptic number.

1311620561112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311620561112 is an abundant number, since it is smaller than the sum of its proper divisors (2042976424488).

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

1311620561112 is a wasteful number, since it uses less digits than its factorization.

1311620561112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546856 (or 5546852 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The spelling of 1311620561112 in words is "one trillion, three hundred eleven billion, six hundred twenty million, five hundred sixty-one thousand, one hundred twelve".