1321057032 has 64 divisors (see below), whose sum is σ = 3340372800. Its totient is φ = 435352320.

The previous prime is 1321057021. The next prime is 1321057081. The reversal of 1321057032 is 2307501231.

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

It is a junction number, because it is equal to n+sod(n) for n = 1321056993 and 1321057011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862107 + ... + 863637.

It is an arithmetic number, because the mean of its divisors is an integer number (52193325).

Almost surely, 2^1321057032 is an apocalyptic number.

1321057032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321057032 is an abundant number, since it is smaller than the sum of its proper divisors (2019315768).

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

1321057032 is a wasteful number, since it uses less digits than its factorization.

1321057032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 1321057032 is about 36346.3482622395. The cubic root of 1321057032 is about 1097.2540412535.

Adding to 1321057032 its reverse (2307501231), we get a palindrome (3628558263).

The spelling of 1321057032 in words is "one billion, three hundred twenty-one million, fifty-seven thousand, thirty-two".