1201311384 has 128 divisors (see below), whose sum is σ = 3706698240. Its totient is φ = 315942912.

The previous prime is 1201311383. The next prime is 1201311431. The reversal of 1201311384 is 4831131021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201311383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1229104 + ... + 1230080.

It is an arithmetic number, because the mean of its divisors is an integer number (28958580).

Almost surely, 2^1201311384 is an apocalyptic number.

1201311384 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 1201311384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1853349120).

1201311384 is an abundant number, since it is smaller than the sum of its proper divisors (2505386856).

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

1201311384 is a wasteful number, since it uses less digits than its factorization.

1201311384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569 (or 1565 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1201311384 is about 34659.9391805583. The cubic root of 1201311384 is about 1063.0455264378.

The spelling of 1201311384 in words is "one billion, two hundred one million, three hundred eleven thousand, three hundred eighty-four".