30152831 has 2 divisors, whose sum is σ = 30152832. Its totient is φ = 30152830.

The previous prime is 30152827. The next prime is 30152833. The reversal of 30152831 is 13825103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30152831 - 2² = 30152827 is a prime.

It is a super-2 number, since 2×30152831² = 1818386434629122, which contains 22 as substring.

Together with 30152833, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 30152797 and 30152806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30152833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15076415 + 15076416.

It is an arithmetic number, because the mean of its divisors is an integer number (15076416).

Almost surely, 2^30152831 is an apocalyptic number.

30152831 is a deficient number, since it is larger than the sum of its proper divisors (1).

30152831 is an equidigital number, since it uses as much as digits as its factorization.

30152831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 30152831 is about 5491.1593493542. The cubic root of 30152831 is about 311.2500031720.

Adding to 30152831 its reverse (13825103), we get a palindrome (43977934).

The spelling of 30152831 in words is "thirty million, one hundred fifty-two thousand, eight hundred thirty-one".