12761431 has 4 divisors (see below), whose sum is σ = 12842872. Its totient is φ = 12679992.

The previous prime is 12761387. The next prime is 12761453. The reversal of 12761431 is 13416721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13416721 = 859 ⋅15619.

It is a cyclic number.

It is not a de Polignac number, because 12761431 - 2¹⁵ = 12728663 is a prime.

It is a super-2 number, since 2×12761431² = 325708242335522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12761396 and 12761405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12761461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40485 + ... + 40798.

It is an arithmetic number, because the mean of its divisors is an integer number (3210718).

Almost surely, 2^12761431 is an apocalyptic number.

12761431 is a deficient number, since it is larger than the sum of its proper divisors (81441).

12761431 is an equidigital number, since it uses as much as digits as its factorization.

12761431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81440.

The product of its digits is 1008, while the sum is 25.

The square root of 12761431 is about 3572.3145158286. The cubic root of 12761431 is about 233.6862317593.

The spelling of 12761431 in words is "twelve million, seven hundred sixty-one thousand, four hundred thirty-one".