201340342997 has 4 divisors (see below), whose sum is σ = 201512282976. Its totient is φ = 201168403020.

The previous prime is 201340342991. The next prime is 201340342999. The reversal of 201340342997 is 799243043102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201340342997 - 2²⁰ = 201339294421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201340342991) 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, 85968233 + ... + 85970574.

It is an arithmetic number, because the mean of its divisors is an integer number (50378070744).

Almost surely, 2^201340342997 is an apocalyptic number.

It is an amenable number.

201340342997 is a deficient number, since it is larger than the sum of its proper divisors (171939979).

201340342997 is a wasteful number, since it uses less digits than its factorization.

201340342997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171939978.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 201340342997 in words is "two hundred one billion, three hundred forty million, three hundred forty-two thousand, nine hundred ninety-seven".