1143213011 has 8 divisors (see below), whose sum is σ = 1150620000. Its totient is φ = 1135823040.

The previous prime is 1143212971. The next prime is 1143213023. The reversal of 1143213011 is 1103123411.

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-1143213011 is a prime.

It is a super-2 number, since 2×1143213011² = 2613871977039372242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143213311) 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, 147665 + ... + 155213.

It is an arithmetic number, because the mean of its divisors is an integer number (143827500).

Almost surely, 2^1143213011 is an apocalyptic number.

1143213011 is a deficient number, since it is larger than the sum of its proper divisors (7406989).

1143213011 is an equidigital number, since it uses as much as digits as its factorization.

1143213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1143213011 is about 33811.4331402856. The cubic root of 1143213011 is about 1045.6244250816.

Adding to 1143213011 its reverse (1103123411), we get a palindrome (2246336422).

The spelling of 1143213011 in words is "one billion, one hundred forty-three million, two hundred thirteen thousand, eleven".