213854791 has 2 divisors, whose sum is σ = 213854792. Its totient is φ = 213854790.

The previous prime is 213854779. The next prime is 213854831. The reversal of 213854791 is 197458312.

It is an a-pointer prime, because the next prime (213854831) can be obtained adding 213854791 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213854791 - 2¹³ = 213846599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213854491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106927395 + 106927396.

It is an arithmetic number, because the mean of its divisors is an integer number (106927396).

Almost surely, 2^213854791 is an apocalyptic number.

213854791 is a deficient number, since it is larger than the sum of its proper divisors (1).

213854791 is an equidigital number, since it uses as much as digits as its factorization.

213854791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 213854791 is about 14623.7748546673. The cubic root of 213854791 is about 598.0070831702.

The spelling of 213854791 in words is "two hundred thirteen million, eight hundred fifty-four thousand, seven hundred ninety-one".