30222431 has 2 divisors, whose sum is σ = 30222432. Its totient is φ = 30222430.

The previous prime is 30222397. The next prime is 30222443. The reversal of 30222431 is 13422203.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30222431 - 2¹⁴ = 30206047 is a prime.

It is a super-2 number, since 2×30222431² = 1826790671099522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30222131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15111215 + 15111216.

It is an arithmetic number, because the mean of its divisors is an integer number (15111216).

Almost surely, 2^30222431 is an apocalyptic number.

30222431 is a deficient number, since it is larger than the sum of its proper divisors (1).

30222431 is an equidigital number, since it uses as much as digits as its factorization.

30222431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30222431 is about 5497.4931559757. The cubic root of 30222431 is about 311.4892991522.

Adding to 30222431 its reverse (13422203), we get a palindrome (43644634).

The spelling of 30222431 in words is "thirty million, two hundred twenty-two thousand, four hundred thirty-one".