311402311109 has 4 divisors (see below), whose sum is σ = 311403856620. Its totient is φ = 311400765600.

The previous prime is 311402311097. The next prime is 311402311177. The reversal of 311402311109 is 901113204113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901113204113 = 33809 ⋅26653057.

It can be written as a sum of positive squares in 2 ways, for example, as 67588560484 + 243813750625 = 259978^2 + 493775^2 .

It is a cyclic number.

It is not a de Polignac number, because 311402311109 - 2¹⁶ = 311402245573 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 (311402311309) 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, 415454 + ... + 891855.

It is an arithmetic number, because the mean of its divisors is an integer number (77850964155).

Almost surely, 2^311402311109 is an apocalyptic number.

It is an amenable number.

311402311109 is a deficient number, since it is larger than the sum of its proper divisors (1545511).

311402311109 is a wasteful number, since it uses less digits than its factorization.

311402311109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545510.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 311402311109 in words is "three hundred eleven billion, four hundred two million, three hundred eleven thousand, one hundred nine".