338109731 has 16 divisors (see below), whose sum is σ = 365418240. Its totient is φ = 311804640.

The previous prime is 338109727. The next prime is 338109791. The reversal of 338109731 is 137901833.

It is a cyclic number.

It is not a de Polignac number, because 338109731 - 2² = 338109727 is a prime.

It is a super-2 number, since 2×338109731² = 228636380393784722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 338109691 and 338109700.

It is not an unprimeable number, because it can be changed into a prime (338109791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343466 + ... + 344448.

It is an arithmetic number, because the mean of its divisors is an integer number (22838640).

Almost surely, 2^338109731 is an apocalyptic number.

338109731 is a deficient number, since it is larger than the sum of its proper divisors (27308509).

338109731 is a wasteful number, since it uses less digits than its factorization.

338109731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 338109731 is about 18387.7603584558. The cubic root of 338109731 is about 696.6573499310.

The spelling of 338109731 in words is "three hundred thirty-eight million, one hundred nine thousand, seven hundred thirty-one".