654311143 has 2 divisors, whose sum is σ = 654311144. Its totient is φ = 654311142.

The previous prime is 654311131. The next prime is 654311149. The reversal of 654311143 is 341113456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654311143 - 2¹³ = 654302951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654311149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327155571 + 327155572.

It is an arithmetic number, because the mean of its divisors is an integer number (327155572).

Almost surely, 2^654311143 is an apocalyptic number.

654311143 is a deficient number, since it is larger than the sum of its proper divisors (1).

654311143 is an equidigital number, since it uses as much as digits as its factorization.

654311143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 654311143 is about 25579.5063087621. The cubic root of 654311143 is about 868.1500051333.

Adding to 654311143 its reverse (341113456), we get a palindrome (995424599).

The spelling of 654311143 in words is "six hundred fifty-four million, three hundred eleven thousand, one hundred forty-three".