12477131 has 4 divisors (see below), whose sum is σ = 12487272. Its totient is φ = 12466992.

The previous prime is 12477107. The next prime is 12477139. The reversal of 12477131 is 13177421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13177421 = 131 ⋅100591.

It is a cyclic number.

It is not a de Polignac number, because 12477131 - 2⁶ = 12477067 is a prime.

It is a super-2 number, since 2×12477131² = 311357595982322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12477131.

It is not an unprimeable number, because it can be changed into a prime (12477139) 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, 2921 + ... + 5786.

It is an arithmetic number, because the mean of its divisors is an integer number (3121818).

Almost surely, 2^12477131 is an apocalyptic number.

12477131 is a deficient number, since it is larger than the sum of its proper divisors (10141).

12477131 is an equidigital number, since it uses as much as digits as its factorization.

12477131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140.

The product of its digits is 1176, while the sum is 26.

The square root of 12477131 is about 3532.2982603399. The cubic root of 12477131 is about 231.9378239546.

The spelling of 12477131 in words is "twelve million, four hundred seventy-seven thousand, one hundred thirty-one".