1143211315 has 8 divisors (see below), whose sum is σ = 1401042240. Its totient is φ = 895109952.

The previous prime is 1143211313. The next prime is 1143211337. The reversal of 1143211315 is 5131123411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1143211315 - 2¹ = 1143211313 is a prime.

It is a super-2 number, since 2×1143211315² = 2613864221488058450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143211313) 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, 2432130 + ... + 2432599.

It is an arithmetic number, because the mean of its divisors is an integer number (175130280).

Almost surely, 2^1143211315 is an apocalyptic number.

1143211315 is a deficient number, since it is larger than the sum of its proper divisors (257830925).

1143211315 is an equidigital number, since it uses as much as digits as its factorization.

1143211315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864781.

The product of its digits is 360, while the sum is 22.

The square root of 1143211315 is about 33811.4080600025. The cubic root of 1143211315 is about 1045.6239080068.

Adding to 1143211315 its reverse (5131123411), we get a palindrome (6274334726).

The spelling of 1143211315 in words is "one billion, one hundred forty-three million, two hundred eleven thousand, three hundred fifteen".