1311433163020 has 24 divisors (see below), whose sum is σ = 2792798513568. Its totient is φ = 517184908800.

The previous prime is 1311433163009. The next prime is 1311433163057. The reversal of 1311433163020 is 203613341131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311433163020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461770821 + ... + 461773660.

It is an arithmetic number, because the mean of its divisors is an integer number (116366604732).

Almost surely, 2^{1311433163020} is an apocalyptic number.

1311433163020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311433163020 is an abundant number, since it is smaller than the sum of its proper divisors (1481365350548).

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

1311433163020 is a wasteful number, since it uses less digits than its factorization.

1311433163020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923544561 (or 923544559 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 1311433163020 in words is "one trillion, three hundred eleven billion, four hundred thirty-three million, one hundred sixty-three thousand, twenty".