1311338996 has 48 divisors (see below), whose sum is σ = 2654975232. Its totient is φ = 560102400.

The previous prime is 1311338989. The next prime is 1311339061. The reversal of 1311338996 is 6998331131.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 699941 + ... + 701811.

It is an arithmetic number, because the mean of its divisors is an integer number (55311984).

Almost surely, 2^1311338996 is an apocalyptic number.

It is an amenable number.

1311338996 is an abundant number, since it is smaller than the sum of its proper divisors (1343636236).

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

1311338996 is a wasteful number, since it uses less digits than its factorization.

1311338996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840 (or 2838 counting only the distinct ones).

The product of its digits is 104976, while the sum is 44.

The square root of 1311338996 is about 36212.4149429446. The cubic root of 1311338996 is about 1094.5568554974.

The spelling of 1311338996 in words is "one billion, three hundred eleven million, three hundred thirty-eight thousand, nine hundred ninety-six".