1311400356 has 24 divisors (see below), whose sum is σ = 3497067840. Its totient is φ = 374685792.

The previous prime is 1311400339. The next prime is 1311400367. The reversal of 1311400356 is 6530041131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7805871 + ... + 7806038.

It is an arithmetic number, because the mean of its divisors is an integer number (145711160).

Almost surely, 2^1311400356 is an apocalyptic number.

It is an amenable number.

1311400356 is an abundant number, since it is smaller than the sum of its proper divisors (2185667484).

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

1311400356 is a wasteful number, since it uses less digits than its factorization.

1311400356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15611923 (or 15611921 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1311400356 is about 36213.2621562874. The cubic root of 1311400356 is about 1094.5739273508.

Adding to 1311400356 its reverse (6530041131), we get a palindrome (7841441487).

The spelling of 1311400356 in words is "one billion, three hundred eleven million, four hundred thousand, three hundred fifty-six".