5031691 has 4 divisors (see below), whose sum is σ = 5750512. Its totient is φ = 4312872.

The previous prime is 5031683. The next prime is 5031701. The reversal of 5031691 is 1961305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1961305 = 5 ⋅392261.

It is a cyclic number.

It is not a de Polignac number, because 5031691 - 2³ = 5031683 is a prime.

It is a Duffinian number.

5031691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5031601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359400 + ... + 359413.

It is an arithmetic number, because the mean of its divisors is an integer number (1437628).

Almost surely, 2^5031691 is an apocalyptic number.

5031691 is a deficient number, since it is larger than the sum of its proper divisors (718821).

5031691 is an equidigital number, since it uses as much as digits as its factorization.

5031691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718820.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 5031691 is about 2243.1431073385. The cubic root of 5031691 is about 171.3581063901.

Adding to 5031691 its reverse (1961305), we get a palindrome (6992996).

The spelling of 5031691 in words is "five million, thirty-one thousand, six hundred ninety-one".