34351991 has 2 divisors, whose sum is σ = 34351992. Its totient is φ = 34351990.

The previous prime is 34351987. The next prime is 34352009. The reversal of 34351991 is 19915343.

34351991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34351991 - 2² = 34351987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34351091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17175995 + 17175996.

It is an arithmetic number, because the mean of its divisors is an integer number (17175996).

Almost surely, 2^34351991 is an apocalyptic number.

34351991 is a deficient number, since it is larger than the sum of its proper divisors (1).

34351991 is an equidigital number, since it uses as much as digits as its factorization.

34351991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 34351991 is about 5861.0571572030. The cubic root of 34351991 is about 325.0752993178.

The spelling of 34351991 in words is "thirty-four million, three hundred fifty-one thousand, nine hundred ninety-one".