12405541031 has 4 divisors (see below), whose sum is σ = 13359813432. Its totient is φ = 11451268632.

The previous prime is 12405541021. The next prime is 12405541079. The reversal of 12405541031 is 13014550421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13014550421 = 20849 ⋅624229.

It is a cyclic number.

It is not a de Polignac number, because 12405541031 - 2¹⁴ = 12405524647 is a prime.

It is a super-2 number, since 2×12405541031² (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 (12405541021) 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, 477136181 + ... + 477136206.

It is an arithmetic number, because the mean of its divisors is an integer number (3339953358).

Almost surely, 2^12405541031 is an apocalyptic number.

12405541031 is a deficient number, since it is larger than the sum of its proper divisors (954272401).

12405541031 is an equidigital number, since it uses as much as digits as its factorization.

12405541031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954272400.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 12405541031 in words is "twelve billion, four hundred five million, five hundred forty-one thousand, thirty-one".