30351121 has 2 divisors, whose sum is σ = 30351122. Its totient is φ = 30351120.

The previous prime is 30351109. The next prime is 30351131. The reversal of 30351121 is 12115303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29550096 + 801025 = 5436^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 30351121 - 2⁷ = 30350993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30351095 and 30351104.

It is not a weakly prime, because it can be changed into another prime (30351131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15175560 + 15175561.

It is an arithmetic number, because the mean of its divisors is an integer number (15175561).

Almost surely, 2^30351121 is an apocalyptic number.

It is an amenable number.

30351121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30351121 is an equidigital number, since it uses as much as digits as its factorization.

30351121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 30351121 is about 5509.1851484589. The cubic root of 30351121 is about 311.9307901767.

Adding to 30351121 its reverse (12115303), we get a palindrome (42466424).

The spelling of 30351121 in words is "thirty million, three hundred fifty-one thousand, one hundred twenty-one".