1201232313 has 12 divisors (see below), whose sum is σ = 1763558628. Its totient is φ = 787692960.

The previous prime is 1201232281. The next prime is 1201232321. The reversal of 1201232313 is 3132321021.

1201232313 is a `hidden beast` number, since 120 + 1 + 232 + 313 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 437981184 + 763251129 = 20928^2 + 27627^2 .

It is not a de Polignac number, because 1201232313 - 2⁵ = 1201232281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201232353) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1093470 + ... + 1094567.

It is an arithmetic number, because the mean of its divisors is an integer number (146963219).

Almost surely, 2^1201232313 is an apocalyptic number.

It is an amenable number.

1201232313 is a deficient number, since it is larger than the sum of its proper divisors (562326315).

1201232313 is a wasteful number, since it uses less digits than its factorization.

1201232313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188104 (or 2188101 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1201232313 is about 34658.7984933119. The cubic root of 1201232313 is about 1063.0222025053.

Adding to 1201232313 its reverse (3132321021), we get a palindrome (4333553334).

The spelling of 1201232313 in words is "one billion, two hundred one million, two hundred thirty-two thousand, three hundred thirteen".