234293732721 has 6 divisors (see below), whose sum is σ = 338424280610. Its totient is φ = 156195821808.

The previous prime is 234293732683. The next prime is 234293732741. The reversal of 234293732721 is 127237392432.

It is a happy number.

234293732721 is a `hidden beast` number, since 2 + 3 + 4 + 2 + 9 + 373 + 272 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 119464244496 + 114829488225 = 345636^2 + 338865^2 .

It is not a de Polignac number, because 234293732721 - 2⁷ = 234293732593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234293732741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13016318476 + ... + 13016318493.

Almost surely, 2^234293732721 is an apocalyptic number.

It is an amenable number.

234293732721 is a deficient number, since it is larger than the sum of its proper divisors (104130547889).

234293732721 is a wasteful number, since it uses less digits than its factorization.

234293732721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26032636975 (or 26032636972 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The spelling of 234293732721 in words is "two hundred thirty-four billion, two hundred ninety-three million, seven hundred thirty-two thousand, seven hundred twenty-one".