30540023 has 4 divisors (see below), whose sum is σ = 30551088. Its totient is φ = 30528960.

The previous prime is 30540017. The next prime is 30540079. The reversal of 30540023 is 32004503.

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, and also an emirpimes, since its reverse is a distinct semiprime: 32004503 = 227 ⋅140989.

It is a cyclic number.

It is not a de Polignac number, because 30540023 - 2²² = 26345719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30539983 and 30540010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542023) 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, 2390 + ... + 8172.

It is an arithmetic number, because the mean of its divisors is an integer number (7637772).

Almost surely, 2^30540023 is an apocalyptic number.

30540023 is a deficient number, since it is larger than the sum of its proper divisors (11065).

30540023 is an equidigital number, since it uses as much as digits as its factorization.

30540023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11064.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 30540023 is about 5526.3028328169. The cubic root of 30540023 is about 312.5765930657.

Adding to 30540023 its reverse (32004503), we get a palindrome (62544526).

The spelling of 30540023 in words is "thirty million, five hundred forty thousand, twenty-three".