30969923 has 4 divisors (see below), whose sum is σ = 31002600. Its totient is φ = 30937248.

The previous prime is 30969919. The next prime is 30969959. The reversal of 30969923 is 32996903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32996903 = 349 ⋅94547.

It is a cyclic number.

It is not a de Polignac number, because 30969923 - 2² = 30969919 is a prime.

It is a super-2 number, since 2×30969923² = 1918272261251858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30969023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14873 + ... + 16826.

It is an arithmetic number, because the mean of its divisors is an integer number (7750650).

Almost surely, 2^30969923 is an apocalyptic number.

30969923 is a deficient number, since it is larger than the sum of its proper divisors (32677).

30969923 is an equidigital number, since it uses as much as digits as its factorization.

30969923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32676.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 30969923 is about 5565.0627130339. The cubic root of 30969923 is about 314.0364374122.

The spelling of 30969923 in words is "thirty million, nine hundred sixty-nine thousand, nine hundred twenty-three".