12545442031 has 8 divisors (see below), whose sum is σ = 12858368544. Its totient is φ = 12232846080.

The previous prime is 12545442029. The next prime is 12545442061. The reversal of 12545442031 is 13024454521.

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 12545442031 - 2¹ = 12545442029 is a prime.

It is a super-2 number, since 2×12545442031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12545441984 and 12545442002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545442061) 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, 4891 + ... + 158476.

It is an arithmetic number, because the mean of its divisors is an integer number (1607296068).

Almost surely, 2^12545442031 is an apocalyptic number.

12545442031 is a deficient number, since it is larger than the sum of its proper divisors (312926513).

12545442031 is a wasteful number, since it uses less digits than its factorization.

12545442031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165281.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 12545442031 its reverse (13024454521), we get a palindrome (25569896552).

The spelling of 12545442031 in words is "twelve billion, five hundred forty-five million, four hundred forty-two thousand, thirty-one".