20312453043 has 24 divisors (see below), whose sum is σ = 31652270208. Its totient is φ = 12504590592.

The previous prime is 20312453039. The next prime is 20312453053. The reversal of 20312453043 is 34035421302.

20312453043 is a `hidden beast` number, since 2 + 0 + 3 + 124 + 530 + 4 + 3 = 666.

It is not a de Polignac number, because 20312453043 - 2² = 20312453039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20312452998 and 20312453016.

It is not an unprimeable number, because it can be changed into a prime (20312453033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1244355 + ... + 1260572.

It is an arithmetic number, because the mean of its divisors is an integer number (1318844592).

Almost surely, 2^20312453043 is an apocalyptic number.

20312453043 is a deficient number, since it is larger than the sum of its proper divisors (11339817165).

20312453043 is a wasteful number, since it uses less digits than its factorization.

20312453043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505003 (or 2505000 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20312453043 its reverse (34035421302), we get a palindrome (54347874345).

The spelling of 20312453043 in words is "twenty billion, three hundred twelve million, four hundred fifty-three thousand, forty-three".