30961423 has 4 divisors (see below), whose sum is σ = 31071888. Its totient is φ = 30850960.

The previous prime is 30961397. The next prime is 30961429. The reversal of 30961423 is 32416903.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30961423 - 2⁹ = 30960911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30961391 and 30961400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30961429) 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, 54811 + ... + 55372.

It is an arithmetic number, because the mean of its divisors is an integer number (7767972).

Almost surely, 2^30961423 is an apocalyptic number.

30961423 is a deficient number, since it is larger than the sum of its proper divisors (110465).

30961423 is a wasteful number, since it uses less digits than its factorization.

30961423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110464.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30961423 is about 5564.2989675250. The cubic root of 30961423 is about 314.0077046536.

The spelling of 30961423 in words is "thirty million, nine hundred sixty-one thousand, four hundred twenty-three".