123431725 has 12 divisors (see below), whose sum is σ = 155213280. Its totient is φ = 97353200.

The previous prime is 123431723. The next prime is 123431807. The reversal of 123431725 is 527134321.

It is not a de Polignac number, because 123431725 - 2¹ = 123431723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123431693 and 123431702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123431723) 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 11 ways as a sum of consecutive naturals, for example, 32995 + ... + 36544.

It is an arithmetic number, because the mean of its divisors is an integer number (12934440).

Almost surely, 2^123431725 is an apocalyptic number.

It is an amenable number.

123431725 is a deficient number, since it is larger than the sum of its proper divisors (31781555).

123431725 is an equidigital number, since it uses as much as digits as its factorization.

123431725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69620 (or 69615 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 123431725 is about 11109.9831232995. The cubic root of 123431725 is about 497.9001603588.

The spelling of 123431725 in words is "one hundred twenty-three million, four hundred thirty-one thousand, seven hundred twenty-five".