1321564332 has 24 divisors (see below), whose sum is σ = 3363982272. Its totient is φ = 400474000.

The previous prime is 1321564331. The next prime is 1321564369. The reversal of 1321564332 is 2334651231.

1321564332 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1321564332² = 3493064567229212448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321564332.

It is not an unprimeable number, because it can be changed into a prime (1321564331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5005794 + ... + 5006057.

It is an arithmetic number, because the mean of its divisors is an integer number (140165928).

Almost surely, 2^1321564332 is an apocalyptic number.

1321564332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321564332 is an abundant number, since it is smaller than the sum of its proper divisors (2042417940).

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

1321564332 is a wasteful number, since it uses less digits than its factorization.

1321564332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011869 (or 10011867 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 1321564332 is about 36353.3262852246. The cubic root of 1321564332 is about 1097.3944756999.

The spelling of 1321564332 in words is "one billion, three hundred twenty-one million, five hundred sixty-four thousand, three hundred thirty-two".