10131591 has 8 divisors (see below), whose sum is σ = 13592320. Its totient is φ = 6712632.

The previous prime is 10131581. The next prime is 10131601. The reversal of 10131591 is 19513101.

It is an interprime number because it is at equal distance from previous prime (10131581) and next prime (10131601).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10131591 - 2⁷ = 10131463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131581) 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 7 ways as a sum of consecutive naturals, for example, 9871 + ... + 10848.

It is an arithmetic number, because the mean of its divisors is an integer number (1699040).

Almost surely, 2^10131591 is an apocalyptic number.

10131591 is a deficient number, since it is larger than the sum of its proper divisors (3460729).

10131591 is a wasteful number, since it uses less digits than its factorization.

10131591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20885.

The product of its (nonzero) digits is 135, while the sum is 21.

The square root of 10131591 is about 3183.0160225798. The cubic root of 10131591 is about 216.3843679165.

Adding to 10131591 its reverse (19513101), we get a palindrome (29644692).

The spelling of 10131591 in words is "ten million, one hundred thirty-one thousand, five hundred ninety-one".