201279117313 has 4 divisors (see below), whose sum is σ = 201281574960. Its totient is φ = 201276659668.

The previous prime is 201279117311. The next prime is 201279117323. The reversal of 201279117313 is 313711972102.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313711972102 = 2 ⋅156855986051.

It is a cyclic number.

It is not a de Polignac number, because 201279117313 - 2¹ = 201279117311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201279117311) 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, 1101583 + ... + 1271236.

It is an arithmetic number, because the mean of its divisors is an integer number (50320393740).

Almost surely, 2^201279117313 is an apocalyptic number.

It is an amenable number.

201279117313 is a deficient number, since it is larger than the sum of its proper divisors (2457647).

201279117313 is an equidigital number, since it uses as much as digits as its factorization.

201279117313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457646.

The product of its (nonzero) digits is 15876, while the sum is 37.

The spelling of 201279117313 in words is "two hundred one billion, two hundred seventy-nine million, one hundred seventeen thousand, three hundred thirteen".