113143212 has 72 divisors (see below), whose sum is σ = 352011296. Its totient is φ = 29839104.

The previous prime is 113143201. The next prime is 113143213. The reversal of 113143212 is 212341311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (113143213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13993 + ... + 20544.

Almost surely, 2^113143212 is an apocalyptic number.

113143212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113143212 is an abundant number, since it is smaller than the sum of its proper divisors (238868084).

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

113143212 is a wasteful number, since it uses less digits than its factorization.

113143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34567 (or 34562 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 113143212 is about 10636.8798056573. The cubic root of 113143212 is about 483.6629657334.

Adding to 113143212 its reverse (212341311), we get a palindrome (325484523).

The spelling of 113143212 in words is "one hundred thirteen million, one hundred forty-three thousand, two hundred twelve".