213051722 has 16 divisors (see below), whose sum is σ = 344401512. Its totient is φ = 98262720.

The previous prime is 213051697. The next prime is 213051733. The reversal of 213051722 is 227150312.

It is a happy number.

213051722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 139452481 + 73599241 = 11809^2 + 8579^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68072 + ... + 71132.

Almost surely, 2^213051722 is an apocalyptic number.

213051722 is a deficient number, since it is larger than the sum of its proper divisors (131349790).

213051722 is a wasteful number, since it uses less digits than its factorization.

213051722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5753.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 213051722 is about 14596.2913782920. The cubic root of 213051722 is about 597.2575974405.

The spelling of 213051722 in words is "two hundred thirteen million, fifty-one thousand, seven hundred twenty-two".