391337733113 has 4 divisors (see below), whose sum is σ = 391351383540. Its totient is φ = 391324082688.

The previous prime is 391337733103. The next prime is 391337733179. The reversal of 391337733113 is 311337733193.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258198129424 + 133139603689 = 508132^2 + 364883^2 .

It is a cyclic number.

It is not a de Polignac number, because 391337733113 - 2¹⁰ = 391337732089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (391337733103) 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, 6782120 + ... + 6839577.

It is an arithmetic number, because the mean of its divisors is an integer number (97837845885).

Almost surely, 2^391337733113 is an apocalyptic number.

It is an amenable number.

391337733113 is a deficient number, since it is larger than the sum of its proper divisors (13650427).

391337733113 is a wasteful number, since it uses less digits than its factorization.

391337733113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13650426.

The product of its digits is 321489, while the sum is 44.

The spelling of 391337733113 in words is "three hundred ninety-one billion, three hundred thirty-seven million, seven hundred thirty-three thousand, one hundred thirteen".