30695139 has 16 divisors (see below), whose sum is σ = 46222240. Its totient is φ = 20126880.

The previous prime is 30695131. The next prime is 30695141. The reversal of 30695139 is 93159603.

It is not a de Polignac number, because 30695139 - 2³ = 30695131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30695131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7672 + ... + 10965.

It is an arithmetic number, because the mean of its divisors is an integer number (2888890).

Almost surely, 2^30695139 is an apocalyptic number.

30695139 is a deficient number, since it is larger than the sum of its proper divisors (15527101).

30695139 is a wasteful number, since it uses less digits than its factorization.

30695139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18707 (or 18701 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 30695139 is about 5540.3193951252. The cubic root of 30695139 is about 313.1049027942.

The spelling of 30695139 in words is "thirty million, six hundred ninety-five thousand, one hundred thirty-nine".