12031325749 has 4 divisors (see below), whose sum is σ = 12664553440. Its totient is φ = 11398098060.

The previous prime is 12031325741. The next prime is 12031325759. The reversal of 12031325749 is 94752313021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12031325749 - 2³ = 12031325741 is a prime.

It is a super-2 number, since 2×12031325749² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031325741) 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, 316613817 + ... + 316613854.

It is an arithmetic number, because the mean of its divisors is an integer number (3166138360).

Almost surely, 2^12031325749 is an apocalyptic number.

12031325749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12031325749 is a deficient number, since it is larger than the sum of its proper divisors (633227691).

12031325749 is an equidigital number, since it uses as much as digits as its factorization.

12031325749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633227690.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 12031325749 in words is "twelve billion, thirty-one million, three hundred twenty-five thousand, seven hundred forty-nine".