143257613 has 2 divisors, whose sum is σ = 143257614. Its totient is φ = 143257612.

The previous prime is 143257571. The next prime is 143257643. The reversal of 143257613 is 316752341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110103049 + 33154564 = 10493^2 + 5758^2 .

It is a cyclic number.

It is not a de Polignac number, because 143257613 - 2¹⁸ = 142995469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143257613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143257643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71628806 + 71628807.

It is an arithmetic number, because the mean of its divisors is an integer number (71628807).

Almost surely, 2^143257613 is an apocalyptic number.

It is an amenable number.

143257613 is a deficient number, since it is larger than the sum of its proper divisors (1).

143257613 is an equidigital number, since it uses as much as digits as its factorization.

143257613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 143257613 is about 11969.0272369980. The cubic root of 143257613 is about 523.2459837264.

The spelling of 143257613 in words is "one hundred forty-three million, two hundred fifty-seven thousand, six hundred thirteen".