1311409456 has 20 divisors (see below), whose sum is σ = 2903835472. Its totient is φ = 562032576.

The previous prime is 1311409391. The next prime is 1311409457. The reversal of 1311409456 is 6549041131.

It is a super-2 number, since 2×1311409456² = 3439589522572431872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311409457) 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, 5854395 + ... + 5854618.

Almost surely, 2^1311409456 is an apocalyptic number.

1311409456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311409456 is an abundant number, since it is smaller than the sum of its proper divisors (1592426016).

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

1311409456 is a wasteful number, since it uses less digits than its factorization.

1311409456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11709028 (or 11709022 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1311409456 is about 36213.3878006463. The cubic root of 1311409456 is about 1094.5764591481.

The spelling of 1311409456 in words is "one billion, three hundred eleven million, four hundred nine thousand, four hundred fifty-six".