123422381 has 2 divisors, whose sum is σ = 123422382. Its totient is φ = 123422380.

The previous prime is 123422371. The next prime is 123422389. The reversal of 123422381 is 183224321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122988100 + 434281 = 11090^2 + 659^2 .

It is a cyclic number.

It is not a de Polignac number, because 123422381 - 2⁶ = 123422317 is a prime.

It is a super-2 number, since 2×123422381² = 30466168263418322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123422381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123422389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61711190 + 61711191.

It is an arithmetic number, because the mean of its divisors is an integer number (61711191).

Almost surely, 2^123422381 is an apocalyptic number.

It is an amenable number.

123422381 is a deficient number, since it is larger than the sum of its proper divisors (1).

123422381 is an equidigital number, since it uses as much as digits as its factorization.

123422381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 123422381 is about 11109.5625926496. The cubic root of 123422381 is about 497.8875960674.

The spelling of 123422381 in words is "one hundred twenty-three million, four hundred twenty-two thousand, three hundred eighty-one".