311244011031 has 16 divisors (see below), whose sum is σ = 421378723584. Its totient is φ = 204325878144.

The previous prime is 311244011017. The next prime is 311244011069. The reversal of 311244011031 is 130110442113.

It is a de Polignac number, because none of the positive numbers 2^k-311244011031 is a prime.

It is a super-2 number, since 2×311244011031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311244010989 and 311244011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311244011531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2849410 + ... + 2956623.

It is an arithmetic number, because the mean of its divisors is an integer number (26336170224).

Almost surely, 2^311244011031 is an apocalyptic number.

311244011031 is a deficient number, since it is larger than the sum of its proper divisors (110134712553).

311244011031 is a wasteful number, since it uses less digits than its factorization.

311244011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806310.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 311244011031 its reverse (130110442113), we get a palindrome (441354453144).

The spelling of 311244011031 in words is "three hundred eleven billion, two hundred forty-four million, eleven thousand, thirty-one".