1113143212 has 12 divisors (see below), whose sum is σ = 1971471096. Its totient is φ = 549865760.

The previous prime is 1113143209. The next prime is 1113143219. The reversal of 1113143212 is 2123413111.

It is a self number, because there is not a number n which added to its sum of digits gives 1113143212.

It is not an unprimeable number, because it can be changed into a prime (1113143219) 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, 1676089 + ... + 1676752.

It is an arithmetic number, because the mean of its divisors is an integer number (164289258).

Almost surely, 2^1113143212 is an apocalyptic number.

It is an amenable number.

1113143212 is a deficient number, since it is larger than the sum of its proper divisors (858327884).

1113143212 is a wasteful number, since it uses less digits than its factorization.

1113143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352928 (or 3352926 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1113143212 is about 33363.8009225568. The cubic root of 1113143212 is about 1036.3752051023.

Adding to 1113143212 its reverse (2123413111), we get a palindrome (3236556323).

The spelling of 1113143212 in words is "one billion, one hundred thirteen million, one hundred forty-three thousand, two hundred twelve".