30404431 has 2 divisors, whose sum is σ = 30404432. Its totient is φ = 30404430.

The previous prime is 30404377. The next prime is 30404453. The reversal of 30404431 is 13440403.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30404431 is a prime.

It is a super-2 number, since 2×30404431² = 1848858848867522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30404399 and 30404408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30404461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15202215 + 15202216.

It is an arithmetic number, because the mean of its divisors is an integer number (15202216).

Almost surely, 2^30404431 is an apocalyptic number.

30404431 is a deficient number, since it is larger than the sum of its proper divisors (1).

30404431 is an equidigital number, since it uses as much as digits as its factorization.

30404431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30404431 is about 5514.0213093531. The cubic root of 30404431 is about 312.1133128578.

Adding to 30404431 its reverse (13440403), we get a palindrome (43844834).

The spelling of 30404431 in words is "thirty million, four hundred four thousand, four hundred thirty-one".