222706531 has 4 divisors (see below), whose sum is σ = 222849864. Its totient is φ = 222563200.

The previous prime is 222706529. The next prime is 222706553. The reversal of 222706531 is 135607222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222706531 - 2¹ = 222706529 is a prime.

It is a super-2 number, since 2×222706531² = 99196397900107922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222706531.

It is not an unprimeable number, because it can be changed into a prime (222706931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69310 + ... + 72451.

It is an arithmetic number, because the mean of its divisors is an integer number (55712466).

Almost surely, 2^222706531 is an apocalyptic number.

222706531 is a deficient number, since it is larger than the sum of its proper divisors (143333).

222706531 is a wasteful number, since it uses less digits than its factorization.

222706531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143332.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 222706531 is about 14923.3552192528. The cubic root of 222706531 is about 606.1465687295.

The spelling of 222706531 in words is "two hundred twenty-two million, seven hundred six thousand, five hundred thirty-one".