30649243 has 2 divisors, whose sum is σ = 30649244. Its totient is φ = 30649242.

The previous prime is 30649207. The next prime is 30649247. The reversal of 30649243 is 34294603.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30649243 - 2²¹ = 28552091 is a prime.

It is not a weakly prime, because it can be changed into another prime (30649247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15324621 + 15324622.

It is an arithmetic number, because the mean of its divisors is an integer number (15324622).

Almost surely, 2^30649243 is an apocalyptic number.

30649243 is a deficient number, since it is larger than the sum of its proper divisors (1).

30649243 is an equidigital number, since it uses as much as digits as its factorization.

30649243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 30649243 is about 5536.1758461956. The cubic root of 30649243 is about 312.9487713319.

The spelling of 30649243 in words is "thirty million, six hundred forty-nine thousand, two hundred forty-three".