1311983830 has 8 divisors (see below), whose sum is σ = 2361570912. Its totient is φ = 524793528.

The previous prime is 1311983773. The next prime is 1311983833. The reversal of 1311983830 is 383891131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1311983830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311983833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65599182 + ... + 65599201.

It is an arithmetic number, because the mean of its divisors is an integer number (295196364).

Almost surely, 2^1311983830 is an apocalyptic number.

1311983830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311983830 is a deficient number, since it is larger than the sum of its proper divisors (1049587082).

1311983830 is a wasteful number, since it uses less digits than its factorization.

1311983830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131198390.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1311983830 is about 36221.3173421398. The cubic root of 1311983830 is about 1094.7362374926.

The spelling of 1311983830 in words is "one billion, three hundred eleven million, nine hundred eighty-three thousand, eight hundred thirty".