191431448 has 32 divisors (see below), whose sum is σ = 399020160. Its totient is φ = 85501440.

The previous prime is 191431439. The next prime is 191431483. The reversal of 191431448 is 844134191.

It is a congruent number.

It is an unprimeable number.

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, 26465 + ... + 32912.

It is an arithmetic number, because the mean of its divisors is an integer number (12469380).

Almost surely, 2^191431448 is an apocalyptic number.

It is an amenable number.

191431448 is an abundant number, since it is smaller than the sum of its proper divisors (207588712).

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

191431448 is a wasteful number, since it uses less digits than its factorization.

191431448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59427 (or 59423 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 191431448 is about 13835.8753969527. The cubic root of 191431448 is about 576.3298249266.

The spelling of 191431448 in words is "one hundred ninety-one million, four hundred thirty-one thousand, four hundred forty-eight".