34307432721 has 12 divisors (see below), whose sum is σ = 49557743872. Its totient is φ = 22870438776.

The previous prime is 34307432711. The next prime is 34307432759. The reversal of 34307432721 is 12723470343.

34307432721 is a `hidden beast` number, since 3 + 4 + 307 + 4 + 327 + 21 = 666.

It is not a de Polignac number, because 34307432721 - 2⁵ = 34307432689 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34307432711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107820 + ... + 283266.

Almost surely, 2^34307432721 is an apocalyptic number.

It is an amenable number.

34307432721 is a deficient number, since it is larger than the sum of its proper divisors (15250311151).

34307432721 is a wasteful number, since it uses less digits than its factorization.

34307432721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197180 (or 197177 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The spelling of 34307432721 in words is "thirty-four billion, three hundred seven million, four hundred thirty-two thousand, seven hundred twenty-one".