34173981 has 20 divisors (see below), whose sum is σ = 51540192. Its totient is φ = 22564008.

The previous prime is 34173967. The next prime is 34173983. The reversal of 34173981 is 18937143.

It is a happy number.

It is not a de Polignac number, because 34173981 - 2⁶ = 34173917 is a prime.

It is a super-2 number, since 2×34173981² = 2335721954776722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34173983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6696 + ... + 10638.

Almost surely, 2^34173981 is an apocalyptic number.

It is an amenable number.

34173981 is a deficient number, since it is larger than the sum of its proper divisors (17366211).

34173981 is a wasteful number, since it uses less digits than its factorization.

34173981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062 (or 4053 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 34173981 is about 5845.8516060536. The cubic root of 34173981 is about 324.5128195802.

The spelling of 34173981 in words is "thirty-four million, one hundred seventy-three thousand, nine hundred eighty-one".