201431312343 has 12 divisors (see below), whose sum is σ = 290961800688. Its totient is φ = 134285021280.

The previous prime is 201431312279. The next prime is 201431312387. The reversal of 201431312343 is 343213134102.

It is a happy number.

201431312343 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 3 + 1 + 312 + 343 = 666.

It is not a de Polignac number, because 201431312343 - 2⁶ = 201431312279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201431312743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384838 + ... + 742268.

It is an arithmetic number, because the mean of its divisors is an integer number (24246816724).

Almost surely, 2^201431312343 is an apocalyptic number.

201431312343 is a deficient number, since it is larger than the sum of its proper divisors (89530488345).

201431312343 is a wasteful number, since it uses less digits than its factorization.

201431312343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420054 (or 420051 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 201431312343 its reverse (343213134102), we get a palindrome (544644446445).

The spelling of 201431312343 in words is "two hundred one billion, four hundred thirty-one million, three hundred twelve thousand, three hundred forty-three".