123354245531 has 8 divisors (see below), whose sum is σ = 134576171328. Its totient is φ = 112133637000.

The previous prime is 123354245519. The next prime is 123354245549. The reversal of 123354245531 is 135542453321.

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

It is a de Polignac number, because none of the positive numbers 2^k-123354245531 is a prime.

It is a super-2 number, since 2×123354245531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123354245501) 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, 128165 + ... + 512966.

It is an arithmetic number, because the mean of its divisors is an integer number (16822021416).

Almost surely, 2^123354245531 is an apocalyptic number.

123354245531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123354245531 is a deficient number, since it is larger than the sum of its proper divisors (11221925797).

123354245531 is a wasteful number, since it uses less digits than its factorization.

123354245531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658633.

The product of its digits is 216000, while the sum is 38.

Adding to 123354245531 its reverse (135542453321), we get a palindrome (258896698852).

The spelling of 123354245531 in words is "one hundred twenty-three billion, three hundred fifty-four million, two hundred forty-five thousand, five hundred thirty-one".