138233351 has 2 divisors, whose sum is σ = 138233352. Its totient is φ = 138233350.

The previous prime is 138233327. The next prime is 138233353. The reversal of 138233351 is 153332831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 138233351 - 2¹⁰ = 138232327 is a prime.

Together with 138233353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138233353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69116675 + 69116676.

It is an arithmetic number, because the mean of its divisors is an integer number (69116676).

Almost surely, 2^138233351 is an apocalyptic number.

138233351 is a deficient number, since it is larger than the sum of its proper divisors (1).

138233351 is an equidigital number, since it uses as much as digits as its factorization.

138233351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 138233351 is about 11757.2680074922. The cubic root of 138233351 is about 517.0560356389.

The spelling of 138233351 in words is "one hundred thirty-eight million, two hundred thirty-three thousand, three hundred fifty-one".