123228451 has 2 divisors, whose sum is σ = 123228452. Its totient is φ = 123228450.

The previous prime is 123228409. The next prime is 123228467. The reversal of 123228451 is 154822321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123228451 - 2¹¹ = 123226403 is a prime.

It is a super-2 number, since 2×123228451² = 30370502271718802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123228401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61614225 + 61614226.

It is an arithmetic number, because the mean of its divisors is an integer number (61614226).

Almost surely, 2^123228451 is an apocalyptic number.

123228451 is a deficient number, since it is larger than the sum of its proper divisors (1).

123228451 is an equidigital number, since it uses as much as digits as its factorization.

123228451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 123228451 is about 11100.8310950127. The cubic root of 123228451 is about 497.6266872639.

The spelling of 123228451 in words is "one hundred twenty-three million, two hundred twenty-eight thousand, four hundred fifty-one".