30501139 has 2 divisors, whose sum is σ = 30501140. Its totient is φ = 30501138.

The previous prime is 30501131. The next prime is 30501157. The reversal of 30501139 is 93110503.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30501139 - 2³ = 30501131 is a prime.

It is not a weakly prime, because it can be changed into another prime (30501131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15250569 + 15250570.

It is an arithmetic number, because the mean of its divisors is an integer number (15250570).

Almost surely, 2^30501139 is an apocalyptic number.

30501139 is a deficient number, since it is larger than the sum of its proper divisors (1).

30501139 is an equidigital number, since it uses as much as digits as its factorization.

30501139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 30501139 is about 5522.7836278457. The cubic root of 30501139 is about 312.4438777082.

The spelling of 30501139 in words is "thirty million, five hundred one thousand, one hundred thirty-nine".