10131431 has 4 divisors (see below), whose sum is σ = 10571952. Its totient is φ = 9690912.

The previous prime is 10131419. The next prime is 10131463. The reversal of 10131431 is 13413101.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-10131431 is a prime.

It is a super-2 number, since 2×10131431² = 205291788215522, 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 (10131481) 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, 220226 + ... + 220271.

It is an arithmetic number, because the mean of its divisors is an integer number (2642988).

Almost surely, 2^10131431 is an apocalyptic number.

10131431 is a deficient number, since it is larger than the sum of its proper divisors (440521).

10131431 is an equidigital number, since it uses as much as digits as its factorization.

10131431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440520.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 10131431 is about 3182.9908890853. The cubic root of 10131431 is about 216.3832288496.

Adding to 10131431 its reverse (13413101), we get a palindrome (23544532).

The spelling of 10131431 in words is "ten million, one hundred thirty-one thousand, four hundred thirty-one".