138211233 has 8 divisors (see below), whose sum is σ = 184338528. Its totient is φ = 92112384.

The previous prime is 138211201. The next prime is 138211253. The reversal of 138211233 is 332112831.

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

It is not a de Polignac number, because 138211233 - 2⁵ = 138211201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138211253) 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, 10366 + ... + 19592.

It is an arithmetic number, because the mean of its divisors is an integer number (23042316).

Almost surely, 2^138211233 is an apocalyptic number.

It is an amenable number.

138211233 is a deficient number, since it is larger than the sum of its proper divisors (46127295).

138211233 is an equidigital number, since it uses as much as digits as its factorization.

138211233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14223.

The product of its digits is 864, while the sum is 24.

The square root of 138211233 is about 11756.3273601920. The cubic root of 138211233 is about 517.0284570184.

The spelling of 138211233 in words is "one hundred thirty-eight million, two hundred eleven thousand, two hundred thirty-three".