1143213100 has 36 divisors (see below), whose sum is σ = 2490481224. Its totient is φ = 455495680.

The previous prime is 1143213083. The next prime is 1143213121. The reversal of 1143213100 is 13123411.

It is a super-2 number, since 2×1143213100² = 2613872384023220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3459 + ... + 47941.

It is an arithmetic number, because the mean of its divisors is an integer number (69180034).

Almost surely, 2^1143213100 is an apocalyptic number.

1143213100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143213100 is an abundant number, since it is smaller than the sum of its proper divisors (1347268124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143213100 is a wasteful number, since it uses less digits than its factorization.

1143213100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44754 (or 44747 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1143213100 is about 33811.4344564084. The cubic root of 1143213100 is about 1045.6244522158.

Adding to 1143213100 its reverse (13123411), we get a palindrome (1156336511).

The spelling of 1143213100 in words is "one billion, one hundred forty-three million, two hundred thirteen thousand, one hundred".