3131323311 has 4 divisors (see below), whose sum is σ = 4175097752. Its totient is φ = 2087548872.

The previous prime is 3131323297. The next prime is 3131323337. The reversal of 3131323311 is 1133231313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1133231313 = 3 ⋅377743771.

It is not a de Polignac number, because 3131323311 - 2⁷ = 3131323183 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 (3131323411) 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, 521887216 + ... + 521887221.

It is an arithmetic number, because the mean of its divisors is an integer number (1043774438).

Almost surely, 2^3131323311 is an apocalyptic number.

3131323311 is a deficient number, since it is larger than the sum of its proper divisors (1043774441).

3131323311 is a wasteful number, since it uses less digits than its factorization.

3131323311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043774440.

The product of its digits is 486, while the sum is 21.

The square root of 3131323311 is about 55958.2282689508. The cubic root of 3131323311 is about 1462.9943099933.

Adding to 3131323311 its reverse (1133231313), we get a palindrome (4264554624).

The spelling of 3131323311 in words is "three billion, one hundred thirty-one million, three hundred twenty-three thousand, three hundred eleven".