91131514 has 8 divisors (see below), whose sum is σ = 141411060. Its totient is φ = 43994496.

The previous prime is 91131511. The next prime is 91131527. The reversal of 91131514 is 41513119.

It can be written as a sum of positive squares in 2 ways, for example, as 89397025 + 1734489 = 9455^2 + 1317^2 .

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

It is not an unprimeable number, because it can be changed into a prime (91131511) 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, 785559 + ... + 785674.

Almost surely, 2^91131514 is an apocalyptic number.

91131514 is a deficient number, since it is larger than the sum of its proper divisors (50279546).

91131514 is a wasteful number, since it uses less digits than its factorization.

91131514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571264.

The product of its digits is 540, while the sum is 25.

The square root of 91131514 is about 9546.2827320376. The cubic root of 91131514 is about 450.0107223783.

The spelling of 91131514 in words is "ninety-one million, one hundred thirty-one thousand, five hundred fourteen".