30601391 has 2 divisors, whose sum is σ = 30601392. Its totient is φ = 30601390.

The previous prime is 30601369. The next prime is 30601393. The reversal of 30601391 is 19310603.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30601391 is a prime.

It is a super-2 number, since 2×30601391² = 1872890262269762, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 30601393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30601393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15300695 + 15300696.

It is an arithmetic number, because the mean of its divisors is an integer number (15300696).

Almost surely, 2^30601391 is an apocalyptic number.

30601391 is a deficient number, since it is larger than the sum of its proper divisors (1).

30601391 is an equidigital number, since it uses as much as digits as its factorization.

30601391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 30601391 is about 5531.8524022248. The cubic root of 30601391 is about 312.7858197829.

Adding to 30601391 its reverse (19310603), we get a palindrome (49911994).

The spelling of 30601391 in words is "thirty million, six hundred one thousand, three hundred ninety-one".