1197132311 has 4 divisors (see below), whose sum is σ = 1197557712. Its totient is φ = 1196706912.

The previous prime is 1197132281. The next prime is 1197132317. The reversal of 1197132311 is 1132317911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1132317911 = 59 ⋅19191829.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1197132311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197132317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208451 + ... + 214116.

It is an arithmetic number, because the mean of its divisors is an integer number (299389428).

Almost surely, 2^1197132311 is an apocalyptic number.

1197132311 is a deficient number, since it is larger than the sum of its proper divisors (425401).

1197132311 is an equidigital number, since it uses as much as digits as its factorization.

1197132311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425400.

The product of its digits is 1134, while the sum is 29.

The square root of 1197132311 is about 34599.5998676285. The cubic root of 1197132311 is about 1061.8114011282.

The spelling of 1197132311 in words is "one billion, one hundred ninety-seven million, one hundred thirty-two thousand, three hundred eleven".