1311340332 has 12 divisors (see below), whose sum is σ = 3059794136. Its totient is φ = 437113440.

The previous prime is 1311340321. The next prime is 1311340361. The reversal of 1311340332 is 2330431131.

1311340332 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1311340332² = 3439226932659740448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311340299 and 1311340308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54639169 + ... + 54639192.

Almost surely, 2^1311340332 is an apocalyptic number.

1311340332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311340332 is an abundant number, since it is smaller than the sum of its proper divisors (1748453804).

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

1311340332 is a wasteful number, since it uses less digits than its factorization.

1311340332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109278368 (or 109278366 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1311340332 is about 36212.4333896522. The cubic root of 1311340332 is about 1094.5572272110.

Adding to 1311340332 its reverse (2330431131), we get a palindrome (3641771463).

The spelling of 1311340332 in words is "one billion, three hundred eleven million, three hundred forty thousand, three hundred thirty-two".