30045031 has 2 divisors, whose sum is σ = 30045032. Its totient is φ = 30045030.

The previous prime is 30045019. The next prime is 30045053. The reversal of 30045031 is 13054003.

It is a weak prime.

It is an emirp because it is prime and its reverse (13054003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30045031 - 2⁹ = 30044519 is a prime.

It is a super-2 number, since 2×30045031² = 1805407775581922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30044996 and 30045014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30045931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15022515 + 15022516.

It is an arithmetic number, because the mean of its divisors is an integer number (15022516).

Almost surely, 2^30045031 is an apocalyptic number.

30045031 is a deficient number, since it is larger than the sum of its proper divisors (1).

30045031 is an equidigital number, since it uses as much as digits as its factorization.

30045031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30045031 is about 5481.3347826966. The cubic root of 30045031 is about 310.8786415245.

Adding to 30045031 its reverse (13054003), we get a palindrome (43099034).

The spelling of 30045031 in words is "thirty million, forty-five thousand, thirty-one".