20320143112 has 16 divisors (see below), whose sum is σ = 40341460860. Its totient is φ = 9562420224.

The previous prime is 20320143101. The next prime is 20320143113. The reversal of 20320143112 is 21134102302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18776124676 + 1544018436 = 137026^2 + 39294^2 .

It is a super-2 number, since 2×20320143112² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20320143112.

It is not an unprimeable number, because it can be changed into a prime (20320143113) 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, 74706273 + ... + 74706544.

Almost surely, 2^20320143112 is an apocalyptic number.

It is an amenable number.

20320143112 is a deficient number, since it is larger than the sum of its proper divisors (20021317748).

20320143112 is a wasteful number, since it uses less digits than its factorization.

20320143112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149412840 (or 149412836 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20320143112 its reverse (21134102302), we get a palindrome (41454245414).

The spelling of 20320143112 in words is "twenty billion, three hundred twenty million, one hundred forty-three thousand, one hundred twelve".