213287156 has 6 divisors (see below), whose sum is σ = 373252530. Its totient is φ = 106643576.

The previous prime is 213287153. The next prime is 213287201. The reversal of 213287156 is 651782312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 204490000 + 8797156 = 14300^2 + 2966^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213287153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26660891 + ... + 26660898.

It is an arithmetic number, because the mean of its divisors is an integer number (62208755).

Almost surely, 2^213287156 is an apocalyptic number.

It is an amenable number.

213287156 is a deficient number, since it is larger than the sum of its proper divisors (159965374).

213287156 is a wasteful number, since it uses less digits than its factorization.

213287156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53321793 (or 53321791 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 213287156 is about 14604.3540083086. The cubic root of 213287156 is about 597.4775174048.

The spelling of 213287156 in words is "two hundred thirteen million, two hundred eighty-seven thousand, one hundred fifty-six".