1201132320 has 48 divisors (see below), whose sum is σ = 3783568320. Its totient is φ = 320301824.

The previous prime is 1201132313. The next prime is 1201132333. The reversal of 1201132320 is 232311021.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1201132320.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250700 + ... + 1251659.

It is an arithmetic number, because the mean of its divisors is an integer number (78824340).

Almost surely, 2^1201132320 is an apocalyptic number.

1201132320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201132320 is an abundant number, since it is smaller than the sum of its proper divisors (2582436000).

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

1201132320 is a wasteful number, since it uses less digits than its factorization.

1201132320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502377 (or 2502369 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1201132320 is about 34657.3559291530. The cubic root of 1201132320 is about 1062.9927056495.

Adding to 1201132320 its reverse (232311021), we get a palindrome (1433443341).

The spelling of 1201132320 in words is "one billion, two hundred one million, one hundred thirty-two thousand, three hundred twenty".