30150031 has 2 divisors, whose sum is σ = 30150032.
Its totient is φ = 30150030.
The previous prime is 30150023. The next prime is 30150091. The reversal of 30150031 is 13005103.
It is a weak prime.
It is an emirp because it is prime and its reverse (13005103) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30150031 - 23 = 30150023 is a prime.
It is a super-2 number, since 2×301500312 = 1818048738601922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30149993 and 30150020.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30150091) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15075015 + 15075016.
It is an arithmetic number, because the mean of its divisors is an integer number (15075016).
Almost surely, 230150031 is an apocalyptic number.
30150031 is a deficient number, since it is larger than the sum of its proper divisors (1).
30150031 is an equidigital number, since it uses as much as digits as its factorization.
30150031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 45, while the sum is 13.
The square root of 30150031 is about 5490.9043881678.
The cubic root of 30150031 is about 311.2403686207.
Adding to 30150031 its reverse (13005103), we get a palindrome (43155134).
The spelling of 30150031 in words is "thirty million, one hundred fifty thousand, thirty-one".