133431310197 has 24 divisors (see below), whose sum is σ = 193071278400. Its totient is φ = 88798742208.

The previous prime is 133431310163. The next prime is 133431310219. The reversal of 133431310197 is 791013134331.

133431310197 is a `hidden beast` number, since 1 + 3 + 3 + 431 + 31 + 0 + 197 = 666.

It is not a de Polignac number, because 133431310197 - 2¹¹ = 133431308149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133431310157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13326129 + ... + 13336137.

It is an arithmetic number, because the mean of its divisors is an integer number (8044636600).

Almost surely, 2^133431310197 is an apocalyptic number.

It is an amenable number.

133431310197 is a deficient number, since it is larger than the sum of its proper divisors (59639968203).

133431310197 is a wasteful number, since it uses less digits than its factorization.

133431310197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12457 (or 12454 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The spelling of 133431310197 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred ten thousand, one hundred ninety-seven".