1320111400 has 24 divisors (see below), whose sum is σ = 3069259470. Its totient is φ = 528044480.

The previous prime is 1320111383. The next prime is 1320111413. The reversal of 1320111400 is 41110231.

It can be written as a sum of positive squares in 3 ways, for example, as 923065924 + 397045476 = 30382^2 + 19926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3300079 + ... + 3300478.

Almost surely, 2^1320111400 is an apocalyptic number.

1320111400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320111400 is an abundant number, since it is smaller than the sum of its proper divisors (1749148070).

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

1320111400 is a wasteful number, since it uses less digits than its factorization.

1320111400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600573 (or 6600564 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1320111400 is about 36333.3373088683. The cubic root of 1320111400 is about 1096.9921685806.

Adding to 1320111400 its reverse (41110231), we get a palindrome (1361221631).

The spelling of 1320111400 in words is "one billion, three hundred twenty million, one hundred eleven thousand, four hundred".