338038931 has 4 divisors (see below), whose sum is σ = 357923592. Its totient is φ = 318154272.

The previous prime is 338038913. The next prime is 338038933. The reversal of 338038931 is 139830833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139830833 = 113 ⋅1237441.

It is a cyclic number.

It is not a de Polignac number, because 338038931 - 2¹⁸ = 337776787 is a prime.

It is a super-2 number, since 2×338038931² = 228540637743245522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338038933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9942305 + ... + 9942338.

It is an arithmetic number, because the mean of its divisors is an integer number (89480898).

Almost surely, 2^338038931 is an apocalyptic number.

338038931 is a deficient number, since it is larger than the sum of its proper divisors (19884661).

338038931 is a wasteful number, since it uses less digits than its factorization.

338038931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19884660.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 338038931 is about 18385.8350639834. The cubic root of 338038931 is about 696.6087199755.

The spelling of 338038931 in words is "three hundred thirty-eight million, thirty-eight thousand, nine hundred thirty-one".