311694497641 has 4 divisors (see below), whose sum is σ = 314148785152. Its totient is φ = 309240210132.

The previous prime is 311694497593. The next prime is 311694497657. The reversal of 311694497641 is 146794496113.

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 311694497641 - 2²¹ = 311692400489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311694497441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1227143565 + ... + 1227143818.

It is an arithmetic number, because the mean of its divisors is an integer number (78537196288).

Almost surely, 2^311694497641 is an apocalyptic number.

It is an amenable number.

311694497641 is a deficient number, since it is larger than the sum of its proper divisors (2454287511).

311694497641 is a wasteful number, since it uses less digits than its factorization.

311694497641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454287510.

The product of its digits is 3919104, while the sum is 55.

The spelling of 311694497641 in words is "three hundred eleven billion, six hundred ninety-four million, four hundred ninety-seven thousand, six hundred forty-one".