1231332201 has 24 divisors (see below), whose sum is σ = 1950062400. Its totient is φ = 742500000.

The previous prime is 1231332191. The next prime is 1231332203. The reversal of 1231332201 is 1022331321.

It is not a de Polignac number, because 1231332201 - 2⁵ = 1231332169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231332203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11550 + ... + 50951.

It is an arithmetic number, because the mean of its divisors is an integer number (81252600).

Almost surely, 2^1231332201 is an apocalyptic number.

1231332201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1231332201 is a deficient number, since it is larger than the sum of its proper divisors (718730199).

1231332201 is a wasteful number, since it uses less digits than its factorization.

1231332201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62717 (or 62714 counting only the distinct ones).

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

The square root of 1231332201 is about 35090.3434152474. The cubic root of 1231332201 is about 1071.8279526489.

Adding to 1231332201 its reverse (1022331321), we get a palindrome (2253663522).

The spelling of 1231332201 in words is "one billion, two hundred thirty-one million, three hundred thirty-two thousand, two hundred one".