12453031040 has 32 divisors (see below), whose sum is σ = 29770528860. Its totient is φ = 4981212160.

The previous prime is 12453031001. The next prime is 12453031079. The reversal of 12453031040 is 4013035421.

It is an interprime number because it is at equal distance from previous prime (12453031001) and next prime (12453031079).

It can be written as a sum of positive squares in 2 ways, for example, as 11839180864 + 613850176 = 108808^2 + 24776^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 12453030997 and 12453031015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9728291 + ... + 9729570.

Almost surely, 2^12453031040 is an apocalyptic number.

12453031040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12453031040 is an abundant number, since it is smaller than the sum of its proper divisors (17317497820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12453031040 is an equidigital number, since it uses as much as digits as its factorization.

12453031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19457880 (or 19457868 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 12453031040 its reverse (4013035421), we get a palindrome (16466066461).

The spelling of 12453031040 in words is "twelve billion, four hundred fifty-three million, thirty-one thousand, forty".