30561023 has 2 divisors, whose sum is σ = 30561024. Its totient is φ = 30561022.

The previous prime is 30561017. The next prime is 30561049. The reversal of 30561023 is 32016503.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30561023 - 2²⁰ = 29512447 is a prime.

It is a super-2 number, since 2×30561023² = 1867952253613058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30560986 and 30561004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30561623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15280511 + 15280512.

It is an arithmetic number, because the mean of its divisors is an integer number (15280512).

Almost surely, 2^30561023 is an apocalyptic number.

30561023 is a deficient number, since it is larger than the sum of its proper divisors (1).

30561023 is an equidigital number, since it uses as much as digits as its factorization.

30561023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 30561023 is about 5528.2025107624. The cubic root of 30561023 is about 312.6482215261.

Adding to 30561023 its reverse (32016503), we get a palindrome (62577526).

The spelling of 30561023 in words is "thirty million, five hundred sixty-one thousand, twenty-three".