1320353601 has 32 divisors (see below), whose sum is σ = 2065010688. Its totient is φ = 734840640.

The previous prime is 1320353599. The next prime is 1320353611. The reversal of 1320353601 is 1063530231.

It is a happy number.

It is not a de Polignac number, because 1320353601 - 2¹ = 1320353599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320353611) 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, 126940 + ... + 136946.

It is an arithmetic number, because the mean of its divisors is an integer number (64531584).

Almost surely, 2^1320353601 is an apocalyptic number.

It is an amenable number.

1320353601 is a deficient number, since it is larger than the sum of its proper divisors (744657087).

1320353601 is a wasteful number, since it uses less digits than its factorization.

1320353601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10181.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 1320353601 is about 36336.6701969237. The cubic root of 1320353601 is about 1097.0592529072.

Adding to 1320353601 its reverse (1063530231), we get a palindrome (2383883832).

The spelling of 1320353601 in words is "one billion, three hundred twenty million, three hundred fifty-three thousand, six hundred one".