123485531 has 8 divisors (see below), whose sum is σ = 133421904. Its totient is φ = 113611680.

The previous prime is 123485473. The next prime is 123485561. The reversal of 123485531 is 135584321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123485531 - 2¹⁰ = 123484507 is a prime.

It is a super-2 number, since 2×123485531² = 30497352732703922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123485561) 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 7 ways as a sum of consecutive naturals, for example, 11480 + ... + 19461.

It is an arithmetic number, because the mean of its divisors is an integer number (16677738).

Almost surely, 2^123485531 is an apocalyptic number.

123485531 is a deficient number, since it is larger than the sum of its proper divisors (9936373).

123485531 is a wasteful number, since it uses less digits than its factorization.

123485531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31261.

The product of its digits is 14400, while the sum is 32.

The square root of 123485531 is about 11112.4043752916. The cubic root of 123485531 is about 497.9724975807.

The spelling of 123485531 in words is "one hundred twenty-three million, four hundred eighty-five thousand, five hundred thirty-one".