30402231 has 16 divisors (see below), whose sum is σ = 41710464. Its totient is φ = 19688864.

The previous prime is 30402209. The next prime is 30402257. The reversal of 30402231 is 13220403.

It is not a de Polignac number, because 30402231 - 2⁵ = 30402199 is a prime.

It is a super-2 number, since 2×30402231² = 1848591299554722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30402231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30402131) 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, 16120 + ... + 17906.

It is an arithmetic number, because the mean of its divisors is an integer number (2606904).

Almost surely, 2^30402231 is an apocalyptic number.

30402231 is a deficient number, since it is larger than the sum of its proper divisors (11308233).

30402231 is a wasteful number, since it uses less digits than its factorization.

30402231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30402231 is about 5513.8218143136. The cubic root of 30402231 is about 312.1057847243.

Adding to 30402231 its reverse (13220403), we get a palindrome (43622634).

The spelling of 30402231 in words is "thirty million, four hundred two thousand, two hundred thirty-one".