30980863 has 4 divisors (see below), whose sum is σ = 31488808. Its totient is φ = 30472920.

The previous prime is 30980857. The next prime is 30980869. The reversal of 30980863 is 36808903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36808903 = 43 ⋅856021.

It is an interprime number because it is at equal distance from previous prime (30980857) and next prime (30980869).

It is a cyclic number.

It is not a de Polignac number, because 30980863 - 2⁹ = 30980351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30980869) 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, 253881 + ... + 254002.

It is an arithmetic number, because the mean of its divisors is an integer number (7872202).

Almost surely, 2^30980863 is an apocalyptic number.

30980863 is a deficient number, since it is larger than the sum of its proper divisors (507945).

30980863 is an equidigital number, since it uses as much as digits as its factorization.

30980863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507944.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 30980863 is about 5566.0455441902. The cubic root of 30980863 is about 314.0734104260.

The spelling of 30980863 in words is "thirty million, nine hundred eighty thousand, eight hundred sixty-three".