2031031323111 has 24 divisors (see below), whose sum is σ = 3167575333104. Its totient is φ = 1154177216640.

The previous prime is 2031031323103. The next prime is 2031031323133. The reversal of 2031031323111 is 1113231301302.

It is a happy number.

It is not a de Polignac number, because 2031031323111 - 2³ = 2031031323103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031031323011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38140630 + ... + 38193843.

It is an arithmetic number, because the mean of its divisors is an integer number (131982305546).

Almost surely, 2^{2031031323111} is an apocalyptic number.

2031031323111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2031031323111 is a deficient number, since it is larger than the sum of its proper divisors (1136544009993).

2031031323111 is a wasteful number, since it uses less digits than its factorization.

2031031323111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76334671 (or 76334664 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 2031031323111 its reverse (1113231301302), we get a palindrome (3144262624413).

The spelling of 2031031323111 in words is "two trillion, thirty-one billion, thirty-one million, three hundred twenty-three thousand, one hundred eleven".