30213999 has 8 divisors (see below), whose sum is σ = 44761520. Its totient is φ = 20142648.

The previous prime is 30213949. The next prime is 30214021. The reversal of 30213999 is 99931203.

It is a de Polignac number, because none of the positive numbers 2^k-30213999 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 (30213949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559492 + ... + 559545.

It is an arithmetic number, because the mean of its divisors is an integer number (5595190).

Almost surely, 2^30213999 is an apocalyptic number.

30213999 is a deficient number, since it is larger than the sum of its proper divisors (14547521).

30213999 is a wasteful number, since it uses less digits than its factorization.

30213999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119046 (or 1119040 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 30213999 is about 5496.7262074802. The cubic root of 30213999 is about 311.4603281531.

The spelling of 30213999 in words is "thirty million, two hundred thirteen thousand, nine hundred ninety-nine".