30416981 has 4 divisors (see below), whose sum is σ = 34762272. Its totient is φ = 26071692.

The previous prime is 30416917. The next prime is 30416999. The reversal of 30416981 is 18961403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30416981 - 2⁶ = 30416917 is a prime.

It is a super-2 number, since 2×30416981² = 1850385466308722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30416381) 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, 2172635 + ... + 2172648.

It is an arithmetic number, because the mean of its divisors is an integer number (8690568).

Almost surely, 2^30416981 is an apocalyptic number.

It is an amenable number.

30416981 is a deficient number, since it is larger than the sum of its proper divisors (4345291).

30416981 is an equidigital number, since it uses as much as digits as its factorization.

30416981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345290.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 30416981 is about 5515.1591998781. The cubic root of 30416981 is about 312.1562504947.

The spelling of 30416981 in words is "thirty million, four hundred sixteen thousand, nine hundred eighty-one".