30689023 has 2 divisors, whose sum is σ = 30689024. Its totient is φ = 30689022.

The previous prime is 30689003. The next prime is 30689053. The reversal of 30689023 is 32098603.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30689023 - 2¹³ = 30680831 is a prime.

It is a super-2 number, since 2×30689023² = 1883632265389058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30689003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15344511 + 15344512.

It is an arithmetic number, because the mean of its divisors is an integer number (15344512).

Almost surely, 2^30689023 is an apocalyptic number.

30689023 is a deficient number, since it is larger than the sum of its proper divisors (1).

30689023 is an equidigital number, since it uses as much as digits as its factorization.

30689023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 30689023 is about 5539.7674138902. The cubic root of 30689023 is about 313.0841060508.

The spelling of 30689023 in words is "thirty million, six hundred eighty-nine thousand, twenty-three".