234993681 has 12 divisors (see below), whose sum is σ = 365545908. Its totient is φ = 144611424.

The previous prime is 234993613. The next prime is 234993683. The reversal of 234993681 is 186399432.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62964225 + 172029456 = 7935^2 + 13116^2 .

It is not a de Polignac number, because 234993681 - 2¹¹ = 234991633 is a prime.

It is a super-2 number, since 2×234993681² = 110444060219859522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (234993683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1004130 + ... + 1004363.

It is an arithmetic number, because the mean of its divisors is an integer number (30462159).

Almost surely, 2^234993681 is an apocalyptic number.

It is an amenable number.

234993681 is a deficient number, since it is larger than the sum of its proper divisors (130552227).

234993681 is a wasteful number, since it uses less digits than its factorization.

234993681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008512 (or 2008509 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 234993681 is about 15329.5036123157. The cubic root of 234993681 is about 617.0950480812.

The spelling of 234993681 in words is "two hundred thirty-four million, nine hundred ninety-three thousand, six hundred eighty-one".