1201132311 has 8 divisors (see below), whose sum is σ = 1604695680. Its totient is φ = 799161912.

The previous prime is 1201132307. The next prime is 1201132313. The reversal of 1201132311 is 1132311021.

It is a happy number.

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

It is not a de Polignac number, because 1201132311 - 2² = 1201132307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201132313) 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, 396481 + ... + 399498.

It is an arithmetic number, because the mean of its divisors is an integer number (200586960).

Almost surely, 2^1201132311 is an apocalyptic number.

1201132311 is a deficient number, since it is larger than the sum of its proper divisors (403563369).

1201132311 is an equidigital number, since it uses as much as digits as its factorization.

1201132311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796485.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1201132311 is about 34657.3557993105. The cubic root of 1201132311 is about 1062.9927029946.

Adding to 1201132311 its reverse (1132311021), we get a palindrome (2333443332).

The spelling of 1201132311 in words is "one billion, two hundred one million, one hundred thirty-two thousand, three hundred eleven".