213506141 has 2 divisors, whose sum is σ = 213506142. Its totient is φ = 213506140.

The previous prime is 213506131. The next prime is 213506197. The reversal of 213506141 is 141605312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170406916 + 43099225 = 13054^2 + 6565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213506141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213506131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106753070 + 106753071.

It is an arithmetic number, because the mean of its divisors is an integer number (106753071).

Almost surely, 2^213506141 is an apocalyptic number.

It is an amenable number.

213506141 is a deficient number, since it is larger than the sum of its proper divisors (1).

213506141 is an equidigital number, since it uses as much as digits as its factorization.

213506141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 213506141 is about 14611.8493353853. The cubic root of 213506141 is about 597.6819270594.

The spelling of 213506141 in words is "two hundred thirteen million, five hundred six thousand, one hundred forty-one".