30469531 has 2 divisors, whose sum is σ = 30469532. Its totient is φ = 30469530.

The previous prime is 30469513. The next prime is 30469553. The reversal of 30469531 is 13596403.

Together with previous prime (30469513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (13596403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30469531 - 2⁷ = 30469403 is a prime.

It is a super-2 number, since 2×30469531² = 1856784638719922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30469493 and 30469502.

It is not a weakly prime, because it can be changed into another prime (30469501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15234765 + 15234766.

It is an arithmetic number, because the mean of its divisors is an integer number (15234766).

Almost surely, 2^30469531 is an apocalyptic number.

30469531 is a deficient number, since it is larger than the sum of its proper divisors (1).

30469531 is an equidigital number, since it uses as much as digits as its factorization.

30469531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 30469531 is about 5519.9212856707. The cubic root of 30469531 is about 312.3359130032.

The spelling of 30469531 in words is "thirty million, four hundred sixty-nine thousand, five hundred thirty-one".