91310148 has 18 divisors (see below), whose sum is σ = 230811854. Its totient is φ = 30436704.

The previous prime is 91310129. The next prime is 91310201. The reversal of 91310148 is 84101319.

It can be written as a sum of positive squares in only one way, i.e., 52969284 + 38340864 = 7278^2 + 6192^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1268161 + ... + 1268232.

Almost surely, 2^91310148 is an apocalyptic number.

It is an amenable number.

91310148 is an abundant number, since it is smaller than the sum of its proper divisors (139501706).

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

91310148 is a wasteful number, since it uses less digits than its factorization.

91310148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536403 (or 2536398 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 91310148 is about 9555.6343588482. The cubic root of 91310148 is about 450.3045641920.

The spelling of 91310148 in words is "ninety-one million, three hundred ten thousand, one hundred forty-eight".