213130741 has 2 divisors, whose sum is σ = 213130742. Its totient is φ = 213130740.

The previous prime is 213130739. The next prime is 213130783. The reversal of 213130741 is 147031312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210395025 + 2735716 = 14505^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 213130741 - 2¹ = 213130739 is a prime.

Together with 213130739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213130721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106565370 + 106565371.

It is an arithmetic number, because the mean of its divisors is an integer number (106565371).

Almost surely, 2^213130741 is an apocalyptic number.

It is an amenable number.

213130741 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130741 is an equidigital number, since it uses as much as digits as its factorization.

213130741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 213130741 is about 14598.9979450646. The cubic root of 213130741 is about 597.3314275010.

The spelling of 213130741 in words is "two hundred thirteen million, one hundred thirty thousand, seven hundred forty-one".