143949313 has 2 divisors, whose sum is σ = 143949314. Its totient is φ = 143949312.

The previous prime is 143949287. The next prime is 143949329. The reversal of 143949313 is 313949341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143712144 + 237169 = 11988^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 143949313 - 2⁹ = 143948801 is a prime.

It is not a weakly prime, because it can be changed into another prime (143949413) 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, 71974656 + 71974657.

It is an arithmetic number, because the mean of its divisors is an integer number (71974657).

Almost surely, 2^143949313 is an apocalyptic number.

It is an amenable number.

143949313 is a deficient number, since it is larger than the sum of its proper divisors (1).

143949313 is an equidigital number, since it uses as much as digits as its factorization.

143949313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 143949313 is about 11997.8878557853. The cubic root of 143949313 is about 524.0867727732.

The spelling of 143949313 in words is "one hundred forty-three million, nine hundred forty-nine thousand, three hundred thirteen".