12351122531 has 8 divisors (see below), whose sum is σ = 13802585328. Its totient is φ = 10954432000.

The previous prime is 12351122513. The next prime is 12351122561. The reversal of 12351122531 is 13522115321.

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 12351122531 - 2⁶ = 12351122467 is a prime.

It is a super-2 number, since 2×12351122531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12351122531.

It is not an unprimeable number, because it can be changed into a prime (12351122561) 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, 13692590 + ... + 13693491.

It is an arithmetic number, because the mean of its divisors is an integer number (1725323166).

Almost surely, 2^12351122531 is an apocalyptic number.

12351122531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12351122531 is a deficient number, since it is larger than the sum of its proper divisors (1451462797).

12351122531 is a wasteful number, since it uses less digits than its factorization.

12351122531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27386133.

The product of its digits is 1800, while the sum is 26.

Adding to 12351122531 its reverse (13522115321), we get a palindrome (25873237852).

The spelling of 12351122531 in words is "twelve billion, three hundred fifty-one million, one hundred twenty-two thousand, five hundred thirty-one".