213497827 has 2 divisors, whose sum is σ = 213497828. Its totient is φ = 213497826.

The previous prime is 213497819. The next prime is 213497831. The reversal of 213497827 is 728794312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213497827 - 2³ = 213497819 is a prime.

It is not a weakly prime, because it can be changed into another prime (213497897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106748913 + 106748914.

It is an arithmetic number, because the mean of its divisors is an integer number (106748914).

Almost surely, 2^213497827 is an apocalyptic number.

213497827 is a deficient number, since it is larger than the sum of its proper divisors (1).

213497827 is an equidigital number, since it uses as much as digits as its factorization.

213497827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 213497827 is about 14611.5648374840. The cubic root of 213497827 is about 597.6741689812.

The spelling of 213497827 in words is "two hundred thirteen million, four hundred ninety-seven thousand, eight hundred twenty-seven".