30723047 has 2 divisors, whose sum is σ = 30723048. Its totient is φ = 30723046.

The previous prime is 30723001. The next prime is 30723053. The reversal of 30723047 is 74032703.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30723047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30723547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15361523 + 15361524.

It is an arithmetic number, because the mean of its divisors is an integer number (15361524).

Almost surely, 2^30723047 is an apocalyptic number.

30723047 is a deficient number, since it is larger than the sum of its proper divisors (1).

30723047 is an equidigital number, since it uses as much as digits as its factorization.

30723047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 30723047 is about 5542.8374502596. The cubic root of 30723047 is about 313.1997656402.

The spelling of 30723047 in words is "thirty million, seven hundred twenty-three thousand, forty-seven".