143431213 has 2 divisors, whose sum is σ = 143431214. Its totient is φ = 143431212.

The previous prime is 143431207. The next prime is 143431229. The reversal of 143431213 is 312134341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106440489 + 36990724 = 10317^2 + 6082^2 .

It is a cyclic number.

It is not a de Polignac number, because 143431213 - 2¹⁷ = 143300141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143431283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71715606 + 71715607.

It is an arithmetic number, because the mean of its divisors is an integer number (71715607).

Almost surely, 2^143431213 is an apocalyptic number.

It is an amenable number.

143431213 is a deficient number, since it is larger than the sum of its proper divisors (1).

143431213 is an equidigital number, since it uses as much as digits as its factorization.

143431213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 143431213 is about 11976.2770926528. The cubic root of 143431213 is about 523.4572554207.

Adding to 143431213 its reverse (312134341), we get a palindrome (455565554).

The spelling of 143431213 in words is "one hundred forty-three million, four hundred thirty-one thousand, two hundred thirteen".