195964231 has 4 divisors (see below), whose sum is σ = 196820200. Its totient is φ = 195108264.

The previous prime is 195964229. The next prime is 195964277. The reversal of 195964231 is 132469591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132469591 = 1663 ⋅79657.

It is a cyclic number.

It is not a de Polignac number, because 195964231 - 2¹ = 195964229 is a prime.

It is a super-3 number, since 3×195964231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195964211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427641 + ... + 428098.

It is an arithmetic number, because the mean of its divisors is an integer number (49205050).

Almost surely, 2^195964231 is an apocalyptic number.

195964231 is a deficient number, since it is larger than the sum of its proper divisors (855969).

195964231 is an equidigital number, since it uses as much as digits as its factorization.

195964231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855968.

The product of its digits is 58320, while the sum is 40.

The square root of 195964231 is about 13998.7224774263. The cubic root of 195964231 is about 580.8432354146.

The spelling of 195964231 in words is "one hundred ninety-five million, nine hundred sixty-four thousand, two hundred thirty-one".