12451542031 has 4 divisors (see below), whose sum is σ = 12788070232. Its totient is φ = 12115013832.

The previous prime is 12451542017. The next prime is 12451542043. The reversal of 12451542031 is 13024515421.

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 12451542031 - 2³¹ = 10304058383 is a prime.

It is a super-2 number, since 2×12451542031² (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 (12451542071) 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, 168264045 + ... + 168264118.

It is an arithmetic number, because the mean of its divisors is an integer number (3197017558).

Almost surely, 2^12451542031 is an apocalyptic number.

12451542031 is a deficient number, since it is larger than the sum of its proper divisors (336528201).

12451542031 is an equidigital number, since it uses as much as digits as its factorization.

12451542031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336528200.

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 12451542031 in words is "twelve billion, four hundred fifty-one million, five hundred forty-two thousand, thirty-one".