1143212397 has 8 divisors (see below), whose sum is σ = 1543578240. Its totient is φ = 752494080.

The previous prime is 1143212377. The next prime is 1143212417. The reversal of 1143212397 is 7932123411.

It is an interprime number because it is at equal distance from previous prime (1143212377) and next prime (1143212417).

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

It is not a de Polignac number, because 1143212397 - 2⁶ = 1143212333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143212377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411604 + ... + 2412077.

It is an arithmetic number, because the mean of its divisors is an integer number (192947280).

Almost surely, 2^1143212397 is an apocalyptic number.

It is an amenable number.

1143212397 is a deficient number, since it is larger than the sum of its proper divisors (400365843).

1143212397 is an equidigital number, since it uses as much as digits as its factorization.

1143212397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823763.

The product of its digits is 9072, while the sum is 33.

The square root of 1143212397 is about 33811.4240605154. The cubic root of 1143212397 is about 1045.6242378859.

The spelling of 1143212397 in words is "one billion, one hundred forty-three million, two hundred twelve thousand, three hundred ninety-seven".