30724723 has 2 divisors, whose sum is σ = 30724724. Its totient is φ = 30724722.

The previous prime is 30724721. The next prime is 30724741. The reversal of 30724723 is 32742703.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30724723 - 2¹ = 30724721 is a prime.

Together with 30724721, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30724691 and 30724700.

It is not a weakly prime, because it can be changed into another prime (30724721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15362361 + 15362362.

It is an arithmetic number, because the mean of its divisors is an integer number (15362362).

Almost surely, 2^30724723 is an apocalyptic number.

30724723 is a deficient number, since it is larger than the sum of its proper divisors (1).

30724723 is an equidigital number, since it uses as much as digits as its factorization.

30724723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 30724723 is about 5542.9886343019. The cubic root of 30724723 is about 313.2054607487.

The spelling of 30724723 in words is "thirty million, seven hundred twenty-four thousand, seven hundred twenty-three".