20043514531 has 2 divisors, whose sum is σ = 20043514532. Its totient is φ = 20043514530.

The previous prime is 20043514529. The next prime is 20043514583. The reversal of 20043514531 is 13541534002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20043514531 - 2¹ = 20043514529 is a prime.

It is a super-2 number, since 2×20043514531² (a number of 21 digits) contains 22 as substring.

Together with 20043514529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20043514531.

It is not a weakly prime, because it can be changed into another prime (20043514591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021757265 + 10021757266.

It is an arithmetic number, because the mean of its divisors is an integer number (10021757266).

Almost surely, 2^20043514531 is an apocalyptic number.

20043514531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043514531 is an equidigital number, since it uses as much as digits as its factorization.

20043514531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 20043514531 in words is "twenty billion, forty-three million, five hundred fourteen thousand, five hundred thirty-one".