1311199064 has 64 divisors (see below), whose sum is σ = 2928906240. Its totient is φ = 538462080.

The previous prime is 1311199061. The next prime is 1311199117. The reversal of 1311199064 is 4609911131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311199061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175142 + ... + 182474.

It is an arithmetic number, because the mean of its divisors is an integer number (45764160).

Almost surely, 2^1311199064 is an apocalyptic number.

1311199064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311199064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464453120).

1311199064 is an abundant number, since it is smaller than the sum of its proper divisors (1617707176).

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

1311199064 is a wasteful number, since it uses less digits than its factorization.

1311199064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480 (or 7476 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 1311199064 is about 36210.4827915895. The cubic root of 1311199064 is about 1094.5179209990.

The spelling of 1311199064 in words is "one billion, three hundred eleven million, one hundred ninety-nine thousand, sixty-four".