12231045531 has 12 divisors (see below), whose sum is σ = 17701781760. Its totient is φ = 8138007600.

The previous prime is 12231045467. The next prime is 12231045551. The reversal of 12231045531 is 13554013221.

12231045531 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 104 + 553 + 1 = 666.

It is not a de Polignac number, because 12231045531 - 2⁶ = 12231045467 is a prime.

It is a super-2 number, since 2×12231045531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12231045495 and 12231045504.

It is not an unprimeable number, because it can be changed into a prime (12231045551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1330395 + ... + 1339556.

It is an arithmetic number, because the mean of its divisors is an integer number (1475148480).

Almost surely, 2^12231045531 is an apocalyptic number.

12231045531 is a deficient number, since it is larger than the sum of its proper divisors (5470736229).

12231045531 is a wasteful number, since it uses less digits than its factorization.

12231045531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670466 (or 2670463 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 12231045531 its reverse (13554013221), we get a palindrome (25785058752).

The spelling of 12231045531 in words is "twelve billion, two hundred thirty-one million, forty-five thousand, five hundred thirty-one".