123302113531 has 4 divisors (see below), whose sum is σ = 123325467064. Its totient is φ = 123278760000.

The previous prime is 123302113477. The next prime is 123302113549. The reversal of 123302113531 is 135311203321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123302113531 - 2²⁹ = 122765242619 is a prime.

It is a super-2 number, since 2×123302113531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123302113496 and 123302113505.

It is not an unprimeable number, because it can be changed into a prime (123302113591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11668845 + ... + 11679406.

It is an arithmetic number, because the mean of its divisors is an integer number (30831366766).

Almost surely, 2^123302113531 is an apocalyptic number.

123302113531 is a deficient number, since it is larger than the sum of its proper divisors (23353533).

123302113531 is an equidigital number, since it uses as much as digits as its factorization.

123302113531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23353532.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 123302113531 its reverse (135311203321), we get a palindrome (258613316852).

The spelling of 123302113531 in words is "one hundred twenty-three billion, three hundred two million, one hundred thirteen thousand, five hundred thirty-one".