12140431 has 4 divisors (see below), whose sum is σ = 12854592. Its totient is φ = 11426272.

The previous prime is 12140419. The next prime is 12140441. The reversal of 12140431 is 13404121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13404121 = 31 ⋅432391.

It is a cyclic number.

It is not a de Polignac number, because 12140431 - 2¹¹ = 12138383 is a prime.

It is a super-2 number, since 2×12140431² = 294780129731522, which 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 (12140441) 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, 357055 + ... + 357088.

It is an arithmetic number, because the mean of its divisors is an integer number (3213648).

Almost surely, 2^12140431 is an apocalyptic number.

12140431 is a deficient number, since it is larger than the sum of its proper divisors (714161).

12140431 is an equidigital number, since it uses as much as digits as its factorization.

12140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714160.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12140431 is about 3484.3121272354. The cubic root of 12140431 is about 229.8324614807.

Adding to 12140431 its reverse (13404121), we get a palindrome (25544552).

The spelling of 12140431 in words is "twelve million, one hundred forty thousand, four hundred thirty-one".