123254431 has 6 divisors (see below), whose sum is σ = 124031400. Its totient is φ = 122479236.

The previous prime is 123254423. The next prime is 123254449. The reversal of 123254431 is 134452321.

It is not a de Polignac number, because 123254431 - 2³ = 123254423 is a prime.

It is a super-2 number, since 2×123254431² = 30383309522267522, 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 = 123254396 and 123254405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123254491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156220 + ... + 157006.

It is an arithmetic number, because the mean of its divisors is an integer number (20671900).

Almost surely, 2^123254431 is an apocalyptic number.

123254431 is a deficient number, since it is larger than the sum of its proper divisors (776969).

123254431 is an frugal number, since it uses more digits than its factorization.

123254431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773 (or 986 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 123254431 is about 11102.0012159971. The cubic root of 123254431 is about 497.6616560091.

The spelling of 123254431 in words is "one hundred twenty-three million, two hundred fifty-four thousand, four hundred thirty-one".