1201332311 has 8 divisors (see below), whose sum is σ = 1235969904. Its totient is φ = 1167186240.

The previous prime is 1201332299. The next prime is 1201332329. The reversal of 1201332311 is 1132331021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201332311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201332311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201332611) 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, 117920 + ... + 127701.

It is an arithmetic number, because the mean of its divisors is an integer number (154496238).

Almost surely, 2^1201332311 is an apocalyptic number.

1201332311 is a deficient number, since it is larger than the sum of its proper divisors (34637593).

1201332311 is an equidigital number, since it uses as much as digits as its factorization.

1201332311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245761.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1201332311 is about 34660.2410695598. The cubic root of 1201332311 is about 1063.0516991989.

Adding to 1201332311 its reverse (1132331021), we get a palindrome (2333663332).

The spelling of 1201332311 in words is "one billion, two hundred one million, three hundred thirty-two thousand, three hundred eleven".