20143112 has 24 divisors (see below), whose sum is σ = 41515950. Its totient is φ = 9155520.

The previous prime is 20143099. The next prime is 20143129. The reversal of 20143112 is 21134102.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 1359556 = 4334^2 + 1166^2 .

It is a super-2 number, since 2×20143112² = 811489922089088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9437 + ... + 11372.

Almost surely, 2^20143112 is an apocalyptic number.

20143112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20143112 is an abundant number, since it is smaller than the sum of its proper divisors (21372838).

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

20143112 is a wasteful number, since it uses less digits than its factorization.

20143112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20837 (or 20822 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20143112 is about 4488.1078418416. The cubic root of 20143112 is about 272.0876663785.

Adding to 20143112 its reverse (21134102), we get a palindrome (41277214).

The spelling of 20143112 in words is "twenty million, one hundred forty-three thousand, one hundred twelve".