30901139 has 2 divisors, whose sum is σ = 30901140. Its totient is φ = 30901138.

The previous prime is 30901111. The next prime is 30901147. The reversal of 30901139 is 93110903.

It is a strong prime.

It is an emirp because it is prime and its reverse (93110903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30901139 - 2¹² = 30897043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30901109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15450569 + 15450570.

It is an arithmetic number, because the mean of its divisors is an integer number (15450570).

Almost surely, 2^30901139 is an apocalyptic number.

30901139 is a deficient number, since it is larger than the sum of its proper divisors (1).

30901139 is an equidigital number, since it uses as much as digits as its factorization.

30901139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 30901139 is about 5558.8792935267. The cubic root of 30901139 is about 313.8037741092.

The spelling of 30901139 in words is "thirty million, nine hundred one thousand, one hundred thirty-nine".