1311497100 has 54 divisors (see below), whose sum is σ = 4110817620. Its totient is φ = 349732320.

The previous prime is 1311497087. The next prime is 1311497141. The reversal of 1311497100 is 17941131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 727710 + ... + 729509.

Almost surely, 2^1311497100 is an apocalyptic number.

1311497100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311497100 is an abundant number, since it is smaller than the sum of its proper divisors (2799320520).

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

1311497100 is a wasteful number, since it uses less digits than its factorization.

1311497100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457239 (or 1457229 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1311497100 is about 36214.5978853832. The cubic root of 1311497100 is about 1094.6008428171.

The spelling of 1311497100 in words is "one billion, three hundred eleven million, four hundred ninety-seven thousand, one hundred".