91130214 has 32 divisors (see below), whose sum is σ = 212232960. Its totient is φ = 25545312.

The previous prime is 91130147. The next prime is 91130219. The reversal of 91130214 is 41203119.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91130219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18244 + ... + 22695.

It is an arithmetic number, because the mean of its divisors is an integer number (6632280).

Almost surely, 2^91130214 is an apocalyptic number.

91130214 is an abundant number, since it is smaller than the sum of its proper divisors (121102746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91130214 is a wasteful number, since it uses less digits than its factorization.

91130214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41004.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 91130214 is about 9546.2146424643. The cubic root of 91130214 is about 450.0085825524.

It can be divided in two parts, 911 and 30214, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 91130214 in words is "ninety-one million, one hundred thirty thousand, two hundred fourteen".