293138681 has 8 divisors (see below), whose sum is σ = 320663424. Its totient is φ = 265759920.

The previous prime is 293138647. The next prime is 293138689. The reversal of 293138681 is 186831392.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 293138681 - 2⁶ = 293138617 is a prime.

It is a super-2 number, since 2×293138681² = 171860572596839522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (293138689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32270 + ... + 40343.

It is an arithmetic number, because the mean of its divisors is an integer number (40082928).

Almost surely, 2^293138681 is an apocalyptic number.

It is an amenable number.

293138681 is a deficient number, since it is larger than the sum of its proper divisors (27524743).

293138681 is a wasteful number, since it uses less digits than its factorization.

293138681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72991.

The product of its digits is 62208, while the sum is 41.

The square root of 293138681 is about 17121.2932046618. The cubic root of 293138681 is about 664.2899923922.

The spelling of 293138681 in words is "two hundred ninety-three million, one hundred thirty-eight thousand, six hundred eighty-one".