138093331 has 8 divisors (see below), whose sum is σ = 143239680. Its totient is φ = 132972672.

The previous prime is 138093317. The next prime is 138093337. The reversal of 138093331 is 133390831.

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 138093331 - 2¹³ = 138085139 is a prime.

It is a super-2 number, since 2×138093331² = 38139536133351122, 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 = 138093293 and 138093302.

It is not an unprimeable number, because it can be changed into a prime (138093337) 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, 4891 + ... + 17323.

It is an arithmetic number, because the mean of its divisors is an integer number (17904960).

Almost surely, 2^138093331 is an apocalyptic number.

138093331 is a deficient number, since it is larger than the sum of its proper divisors (5146349).

138093331 is a wasteful number, since it uses less digits than its factorization.

138093331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12845.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 138093331 is about 11751.3118842111. The cubic root of 138093331 is about 516.8813970200.

The spelling of 138093331 in words is "one hundred thirty-eight million, ninety-three thousand, three hundred thirty-one".