30212929 has 2 divisors, whose sum is σ = 30212930. Its totient is φ = 30212928.

The previous prime is 30212921. The next prime is 30212933. The reversal of 30212929 is 92921203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25482304 + 4730625 = 5048^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 30212929 - 2³ = 30212921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30212897 and 30212906.

It is not a weakly prime, because it can be changed into another prime (30212921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106464 + 15106465.

It is an arithmetic number, because the mean of its divisors is an integer number (15106465).

Almost surely, 2^30212929 is an apocalyptic number.

It is an amenable number.

30212929 is a deficient number, since it is larger than the sum of its proper divisors (1).

30212929 is an equidigital number, since it uses as much as digits as its factorization.

30212929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 30212929 is about 5496.6288759566. The cubic root of 30212929 is about 311.4566514194.

It can be divided in two parts, 302 and 12929, that added together give a palindrome (13231).

The spelling of 30212929 in words is "thirty million, two hundred twelve thousand, nine hundred twenty-nine".