30685023 has 12 divisors (see below), whose sum is σ = 44524480. Its totient is φ = 20363616.

The previous prime is 30685021. The next prime is 30685027. The reversal of 30685023 is 32058603.

It is not a de Polignac number, because 30685023 - 2¹ = 30685021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30685021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5638 + ... + 9651.

Almost surely, 2^30685023 is an apocalyptic number.

30685023 is a deficient number, since it is larger than the sum of its proper divisors (13839457).

30685023 is a wasteful number, since it uses less digits than its factorization.

30685023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518 (or 15515 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 30685023 is about 5539.4063761382. The cubic root of 30685023 is about 313.0705030237.

The spelling of 30685023 in words is "thirty million, six hundred eighty-five thousand, twenty-three".