123359531 has 8 divisors (see below), whose sum is σ = 130731264. Its totient is φ = 116000640.

The previous prime is 123359521. The next prime is 123359539. The reversal of 123359531 is 135953321.

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

It is a cyclic number.

It is not a de Polignac number, because 123359531 - 2¹⁴ = 123343147 is a prime.

It is a super-3 number, since 3×123359531³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123359539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22541 + ... + 27473.

It is an arithmetic number, because the mean of its divisors is an integer number (16341408).

Almost surely, 2^123359531 is an apocalyptic number.

123359531 is a deficient number, since it is larger than the sum of its proper divisors (7371733).

123359531 is a wasteful number, since it uses less digits than its factorization.

123359531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421.

The product of its digits is 12150, while the sum is 32.

The square root of 123359531 is about 11106.7335882338. The cubic root of 123359531 is about 497.8030691275.

The spelling of 123359531 in words is "one hundred twenty-three million, three hundred fifty-nine thousand, five hundred thirty-one".