1311432100 has 36 divisors (see below), whose sum is σ = 3104520048. Its totient is φ = 476884000.

The previous prime is 1311432077. The next prime is 1311432151. The reversal of 1311432100 is 12341131.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 595006 + ... + 597205.

It is an arithmetic number, because the mean of its divisors is an integer number (86236668).

Almost surely, 2^1311432100 is an apocalyptic number.

1311432100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311432100 is an abundant number, since it is smaller than the sum of its proper divisors (1793087948).

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

1311432100 is a wasteful number, since it uses less digits than its factorization.

1311432100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192236 (or 1192229 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311432100 is about 36213.7004461019. The cubic root of 1311432100 is about 1094.5827590993.

Adding to 1311432100 its reverse (12341131), we get a palindrome (1323773231).

The spelling of 1311432100 in words is "one billion, three hundred eleven million, four hundred thirty-two thousand, one hundred".