213115732 has 12 divisors (see below), whose sum is σ = 373094260. Its totient is φ = 106517376.

The previous prime is 213115711. The next prime is 213115733. The reversal of 213115732 is 237511312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13571856 + 199543876 = 3684^2 + 14126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213115697 and 213115706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213115733) 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, 3868 + ... + 21004.

Almost surely, 2^213115732 is an apocalyptic number.

It is an amenable number.

213115732 is a deficient number, since it is larger than the sum of its proper divisors (159978528).

213115732 is a wasteful number, since it uses less digits than its factorization.

213115732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20250 (or 20248 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 213115732 is about 14598.4838938843. The cubic root of 213115732 is about 597.3174055009.

The spelling of 213115732 in words is "two hundred thirteen million, one hundred fifteen thousand, seven hundred thirty-two".