30961011 has 4 divisors (see below), whose sum is σ = 41281352. Its totient is φ = 20640672.

The previous prime is 30960959. The next prime is 30961019. The reversal of 30961011 is 11016903.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30961011 - 2⁶ = 30960947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30961019) 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, 5160166 + ... + 5160171.

It is an arithmetic number, because the mean of its divisors is an integer number (10320338).

Almost surely, 2^30961011 is an apocalyptic number.

30961011 is a deficient number, since it is larger than the sum of its proper divisors (10320341).

30961011 is a wasteful number, since it uses less digits than its factorization.

30961011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320340.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 30961011 is about 5564.2619456672. The cubic root of 30961011 is about 314.0063118263.

Adding to 30961011 its reverse (11016903), we get a palindrome (41977914).

The spelling of 30961011 in words is "thirty million, nine hundred sixty-one thousand, eleven".