30042031 has 2 divisors, whose sum is σ = 30042032. Its totient is φ = 30042030.

The previous prime is 30042013. The next prime is 30042037. The reversal of 30042031 is 13024003.

Together with previous prime (30042013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30042031 - 2¹¹ = 30039983 is a prime.

It is a super-2 number, since 2×30042031² = 1805047253209922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30042037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15021015 + 15021016.

It is an arithmetic number, because the mean of its divisors is an integer number (15021016).

Almost surely, 2^30042031 is an apocalyptic number.

30042031 is a deficient number, since it is larger than the sum of its proper divisors (1).

30042031 is an equidigital number, since it uses as much as digits as its factorization.

30042031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30042031 is about 5481.0611198928. The cubic root of 30042031 is about 310.8682940900.

Adding to 30042031 its reverse (13024003), we get a palindrome (43066034).

The spelling of 30042031 in words is "thirty million, forty-two thousand, thirty-one".