30640211 has 16 divisors (see below), whose sum is σ = 36504000. Its totient is φ = 25162368.

The previous prime is 30640177. The next prime is 30640219. The reversal of 30640211 is 11204603.

It is not a de Polignac number, because 30640211 - 2¹⁰ = 30639187 is a prime.

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 30640211.

It is not an unprimeable number, because it can be changed into a prime (30640219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29741 + ... + 30753.

It is an arithmetic number, because the mean of its divisors is an integer number (2281500).

Almost surely, 2^30640211 is an apocalyptic number.

30640211 is a deficient number, since it is larger than the sum of its proper divisors (5863789).

30640211 is a wasteful number, since it uses less digits than its factorization.

30640211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 30640211 is about 5535.3600605561. The cubic root of 30640211 is about 312.9180274404.

Adding to 30640211 its reverse (11204603), we get a palindrome (41844814).

The spelling of 30640211 in words is "thirty million, six hundred forty thousand, two hundred eleven".