123431552 has 16 divisors (see below), whose sum is σ = 245899050. Its totient is φ = 61715712.

The previous prime is 123431549. The next prime is 123431563. The reversal of 123431552 is 255134321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 80712256 + 42719296 = 8984^2 + 6536^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482027 + ... + 482282.

Almost surely, 2^123431552 is an apocalyptic number.

It is an amenable number.

123431552 is a deficient number, since it is larger than the sum of its proper divisors (122467498).

123431552 is an frugal number, since it uses more digits than its factorization.

123431552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964323 (or 964311 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 123431552 is about 11109.9753375064. The cubic root of 123431552 is about 497.8999277423.

Adding to 123431552 its reverse (255134321), we get a palindrome (378565873).

The spelling of 123431552 in words is "one hundred twenty-three million, four hundred thirty-one thousand, five hundred fifty-two".