20043145031 has 8 divisors (see below), whose sum is σ = 24668486304. Its totient is φ = 15858312480.

The previous prime is 20043144943. The next prime is 20043145033. The reversal of 20043145031 is 13054134002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20043145031 is a prime.

It is a super-2 number, since 2×20043145031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20043144988 and 20043145006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043145033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110127080 + ... + 110127261.

It is an arithmetic number, because the mean of its divisors is an integer number (3083560788).

Almost surely, 2^20043145031 is an apocalyptic number.

20043145031 is a deficient number, since it is larger than the sum of its proper divisors (4625341273).

20043145031 is a wasteful number, since it uses less digits than its factorization.

20043145031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220254361.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20043145031 its reverse (13054134002), we get a palindrome (33097279033).

The spelling of 20043145031 in words is "twenty billion, forty-three million, one hundred forty-five thousand, thirty-one".