213011010 has 24 divisors (see below), whose sum is σ = 553828860. Its totient is φ = 56802912.

The previous prime is 213010997. The next prime is 213011011. The reversal of 213011010 is 10110312.

It can be written as a sum of positive squares in 2 ways, for example, as 211964481 + 1046529 = 14559^2 + 1023^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 213010983 and 213011001.

It is not an unprimeable number, because it can be changed into a prime (213011011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1183305 + ... + 1183484.

Almost surely, 2^213011010 is an apocalyptic number.

213011010 is an abundant number, since it is smaller than the sum of its proper divisors (340817850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213011010 is a wasteful number, since it uses less digits than its factorization.

213011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366802 (or 2366799 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 213011010 is about 14594.8967108370. The cubic root of 213011010 is about 597.2195517490.

Adding to 213011010 its reverse (10110312), we get a palindrome (223121322).

The spelling of 213011010 in words is "two hundred thirteen million, eleven thousand, ten".