213040761 has 16 divisors (see below), whose sum is σ = 290727360. Its totient is φ = 138715200.

The previous prime is 213040747. The next prime is 213040769. The reversal of 213040761 is 167040312.

It is not a de Polignac number, because 213040761 - 2⁹ = 213040249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213040769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33486 + ... + 39336.

It is an arithmetic number, because the mean of its divisors is an integer number (18170460).

Almost surely, 2^213040761 is an apocalyptic number.

It is an amenable number.

213040761 is a deficient number, since it is larger than the sum of its proper divisors (77686599).

213040761 is a wasteful number, since it uses less digits than its factorization.

213040761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6136.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 213040761 is about 14595.9159013746. The cubic root of 213040761 is about 597.2473547746.

The spelling of 213040761 in words is "two hundred thirteen million, forty thousand, seven hundred sixty-one".