338312138 has 32 divisors (see below), whose sum is σ = 571536000. Its totient is φ = 149243904.

The previous prime is 338312131. The next prime is 338312147. The reversal of 338312138 is 831213833.

It is a super-2 number, since 2×338312138² = 228910205436262088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338312131) 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, 59963 + ... + 65361.

It is an arithmetic number, because the mean of its divisors is an integer number (17860500).

Almost surely, 2^338312138 is an apocalyptic number.

338312138 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

338312138 is a deficient number, since it is larger than the sum of its proper divisors (233223862).

338312138 is a wasteful number, since it uses less digits than its factorization.

338312138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534.

The product of its digits is 10368, while the sum is 32.

The square root of 338312138 is about 18393.2633863597. The cubic root of 338312138 is about 696.7963385322.

The spelling of 338312138 in words is "three hundred thirty-eight million, three hundred twelve thousand, one hundred thirty-eight".