4020454531 has 2 divisors, whose sum is σ = 4020454532. Its totient is φ = 4020454530.

The previous prime is 4020454453. The next prime is 4020454567. The reversal of 4020454531 is 1354540204.

4020454531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4020454531 - 2¹¹ = 4020452483 is a prime.

It is a super-2 number, since 2×4020454531² = 32328109271676859922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4020454531.

It is not a weakly prime, because it can be changed into another prime (4020454331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010227265 + 2010227266.

It is an arithmetic number, because the mean of its divisors is an integer number (2010227266).

Almost surely, 2^4020454531 is an apocalyptic number.

4020454531 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020454531 is an equidigital number, since it uses as much as digits as its factorization.

4020454531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 4020454531 is about 63407.0542684329. The cubic root of 4020454531 is about 1590.1022482141.

Adding to 4020454531 its reverse (1354540204), we get a palindrome (5374994735).

The spelling of 4020454531 in words is "four billion, twenty million, four hundred fifty-four thousand, five hundred thirty-one".