30220031 has 8 divisors (see below), whose sum is σ = 30681600. Its totient is φ = 29762208.

The previous prime is 30220007. The next prime is 30220049. The reversal of 30220031 is 13002203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30220031 is a prime.

It is a super-2 number, since 2×30220031² = 1826500547281922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30219994 and 30220021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220061) 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, 18125 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (3835200).

Almost surely, 2^30220031 is an apocalyptic number.

30220031 is a deficient number, since it is larger than the sum of its proper divisors (461569).

30220031 is a wasteful number, since it uses less digits than its factorization.

30220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30220031 is about 5497.2748703335. The cubic root of 30220031 is about 311.4810536860.

Adding to 30220031 its reverse (13002203), we get a palindrome (43222234).

The spelling of 30220031 in words is "thirty million, two hundred twenty thousand, thirty-one".