286213157 has 2 divisors, whose sum is σ = 286213158. Its totient is φ = 286213156.

The previous prime is 286213153. The next prime is 286213163. The reversal of 286213157 is 751312682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266375041 + 19838116 = 16321^2 + 4454^2 .

It is a cyclic number.

It is not a de Polignac number, because 286213157 - 2² = 286213153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (286213153) 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, 143106578 + 143106579.

It is an arithmetic number, because the mean of its divisors is an integer number (143106579).

Almost surely, 2^286213157 is an apocalyptic number.

It is an amenable number.

286213157 is a deficient number, since it is larger than the sum of its proper divisors (1).

286213157 is an equidigital number, since it uses as much as digits as its factorization.

286213157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 286213157 is about 16917.8354702958. The cubic root of 286213157 is about 659.0168688303.

The spelling of 286213157 in words is "two hundred eighty-six million, two hundred thirteen thousand, one hundred fifty-seven".