10431691 has 4 divisors (see below), whose sum is σ = 10460032. Its totient is φ = 10403352.

The previous prime is 10431683. The next prime is 10431709. The reversal of 10431691 is 19613401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19613401 = 863 ⋅22727.

It is a cyclic number.

It is not a de Polignac number, because 10431691 - 2³ = 10431683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10431991) 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, 13611 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (2615008).

Almost surely, 2^10431691 is an apocalyptic number.

10431691 is a deficient number, since it is larger than the sum of its proper divisors (28341).

10431691 is an equidigital number, since it uses as much as digits as its factorization.

10431691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28340.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10431691 is about 3229.8128428750. The cubic root of 10431691 is about 218.5000654556.

The spelling of 10431691 in words is "ten million, four hundred thirty-one thousand, six hundred ninety-one".