30345961 has 4 divisors (see below), whose sum is σ = 30358612. Its totient is φ = 30333312.

The previous prime is 30345941. The next prime is 30345967. The reversal of 30345961 is 16954303.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24561936 + 5784025 = 4956^2 + 2405^2 .

It is a cyclic number.

It is not a de Polignac number, because 30345961 - 2⁵ = 30345929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30345967) 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, 1500 + ... + 7933.

It is an arithmetic number, because the mean of its divisors is an integer number (7589653).

Almost surely, 2^30345961 is an apocalyptic number.

It is an amenable number.

30345961 is a deficient number, since it is larger than the sum of its proper divisors (12651).

30345961 is an equidigital number, since it uses as much as digits as its factorization.

30345961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12650.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 30345961 is about 5508.7168197322. The cubic root of 30345961 is about 311.9131120367.

It can be divided in two parts, 303 and 45961, that added together give a palindrome (46264).

The spelling of 30345961 in words is "thirty million, three hundred forty-five thousand, nine hundred sixty-one".