2311331413 has 4 divisors (see below), whose sum is σ = 2311715628. Its totient is φ = 2310947200.

The previous prime is 2311331401. The next prime is 2311331443. The reversal of 2311331413 is 3141331132.

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 1618694289 + 692637124 = 40233^2 + 26318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311331413 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 (2311331443) 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, 182938 + ... + 195163.

It is an arithmetic number, because the mean of its divisors is an integer number (577928907).

Almost surely, 2^2311331413 is an apocalyptic number.

It is an amenable number.

2311331413 is a deficient number, since it is larger than the sum of its proper divisors (384215).

2311331413 is an equidigital number, since it uses as much as digits as its factorization.

2311331413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384214.

The product of its digits is 648, while the sum is 22.

The square root of 2311331413 is about 48076.3082297300. The cubic root of 2311331413 is about 1322.1703301688.

Adding to 2311331413 its reverse (3141331132), we get a palindrome (5452662545).

The spelling of 2311331413 in words is "two billion, three hundred eleven million, three hundred thirty-one thousand, four hundred thirteen".