123541431 has 48 divisors (see below), whose sum is σ = 192069024. Its totient is φ = 70189056.

The previous prime is 123541403. The next prime is 123541459. The reversal of 123541431 is 134145321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123541403) and next prime (123541459).

It is not a de Polignac number, because 123541431 - 2¹⁰ = 123540407 is a prime.

It is a super-2 number, since 2×123541431² = 30524970347055522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123541031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1093231 + ... + 1093343.

It is an arithmetic number, because the mean of its divisors is an integer number (4001438).

Almost surely, 2^123541431 is an apocalyptic number.

123541431 is a deficient number, since it is larger than the sum of its proper divisors (68527593).

123541431 is a wasteful number, since it uses less digits than its factorization.

123541431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 243 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 123541431 is about 11114.9192979526. The cubic root of 123541431 is about 498.0476277411.

Adding to 123541431 its reverse (134145321), we get a palindrome (257686752).

The spelling of 123541431 in words is "one hundred twenty-three million, five hundred forty-one thousand, four hundred thirty-one".