91131203 has 8 divisors (see below), whose sum is σ = 96784272. Its totient is φ = 85510656.

The previous prime is 91131197. The next prime is 91131241. The reversal of 91131203 is 30213119.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91131203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91131503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225 + ... + 13682.

It is an arithmetic number, because the mean of its divisors is an integer number (12098034).

Almost surely, 2^91131203 is an apocalyptic number.

91131203 is a deficient number, since it is larger than the sum of its proper divisors (5653069).

91131203 is a wasteful number, since it uses less digits than its factorization.

91131203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16261.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 91131203 is about 9546.2664429608. The cubic root of 91131203 is about 450.0102104679.

The spelling of 91131203 in words is "ninety-one million, one hundred thirty-one thousand, two hundred three".