290135213 has 2 divisors, whose sum is σ = 290135214. Its totient is φ = 290135212.

The previous prime is 290135207. The next prime is 290135239. The reversal of 290135213 is 312531092.

It is an a-pointer prime, because the next prime (290135239) can be obtained adding 290135213 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196084009 + 94051204 = 14003^2 + 9698^2 .

It is a cyclic number.

It is not a de Polignac number, because 290135213 - 2¹² = 290131117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290135113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145067606 + 145067607.

It is an arithmetic number, because the mean of its divisors is an integer number (145067607).

Almost surely, 2^290135213 is an apocalyptic number.

It is an amenable number.

290135213 is a deficient number, since it is larger than the sum of its proper divisors (1).

290135213 is an equidigital number, since it uses as much as digits as its factorization.

290135213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 290135213 is about 17033.3558936576. The cubic root of 290135213 is about 662.0134511373.

The spelling of 290135213 in words is "two hundred ninety million, one hundred thirty-five thousand, two hundred thirteen".