30987011 has 16 divisors (see below), whose sum is σ = 35229696. Its totient is φ = 27225000.

The previous prime is 30987007. The next prime is 30987013. The reversal of 30987011 is 11078903.

It is not a de Polignac number, because 30987011 - 2² = 30987007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30987013) 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, 40886 + ... + 41636.

It is an arithmetic number, because the mean of its divisors is an integer number (2201856).

Almost surely, 2^30987011 is an apocalyptic number.

30987011 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30987011 is a deficient number, since it is larger than the sum of its proper divisors (4242685).

30987011 is an equidigital number, since it uses as much as digits as its factorization.

30987011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 30987011 is about 5566.5977939851. The cubic root of 30987011 is about 314.0941844934.

The spelling of 30987011 in words is "thirty million, nine hundred eighty-seven thousand, eleven".