30232381 has 2 divisors, whose sum is σ = 30232382. Its totient is φ = 30232380.

The previous prime is 30232339. The next prime is 30232387. The reversal of 30232381 is 18323203.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26429881 + 3802500 = 5141^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 30232381 - 2¹⁵ = 30199613 is a prime.

It is a super-2 number, since 2×30232381² = 1827993721858322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30232387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15116190 + 15116191.

It is an arithmetic number, because the mean of its divisors is an integer number (15116191).

Almost surely, 2^30232381 is an apocalyptic number.

It is an amenable number.

30232381 is a deficient number, since it is larger than the sum of its proper divisors (1).

30232381 is an equidigital number, since it uses as much as digits as its factorization.

30232381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30232381 is about 5498.3980394293. The cubic root of 30232381 is about 311.5234788256.

Adding to 30232381 its reverse (18323203), we get a palindrome (48555584).

The spelling of 30232381 in words is "thirty million, two hundred thirty-two thousand, three hundred eighty-one".