34133991 has 4 divisors (see below), whose sum is σ = 45511992. Its totient is φ = 22755992.

The previous prime is 34133989. The next prime is 34134059. The reversal of 34133991 is 19933143.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19933143 = 3 ⋅6644381.

It is a cyclic number.

It is not a de Polignac number, because 34133991 - 2¹ = 34133989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34133951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5688996 + ... + 5689001.

It is an arithmetic number, because the mean of its divisors is an integer number (11377998).

Almost surely, 2^34133991 is an apocalyptic number.

34133991 is a deficient number, since it is larger than the sum of its proper divisors (11378001).

34133991 is a wasteful number, since it uses less digits than its factorization.

34133991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11378000.

The product of its digits is 8748, while the sum is 33.

The square root of 34133991 is about 5842.4302306489. The cubic root of 34133991 is about 324.3861897826.

The spelling of 34133991 in words is "thirty-four million, one hundred thirty-three thousand, nine hundred ninety-one".