2031012331111 has 2 divisors, whose sum is σ = 2031012331112. Its totient is φ = 2031012331110.

The previous prime is 2031012331021. The next prime is 2031012331123. The reversal of 2031012331111 is 1111332101302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2031012331111 - 2²⁹ = 2030475460199 is a prime.

It is a super-2 number, since 2×2031012331111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031012331171) 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 as a sum of consecutive naturals, namely, 1015506165555 + 1015506165556.

It is an arithmetic number, because the mean of its divisors is an integer number (1015506165556).

Almost surely, 2^{2031012331111} is an apocalyptic number.

2031012331111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031012331111 is an equidigital number, since it uses as much as digits as its factorization.

2031012331111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2031012331111 its reverse (1111332101302), we get a palindrome (3142344432413).

The spelling of 2031012331111 in words is "two trillion, thirty-one billion, twelve million, three hundred thirty-one thousand, one hundred eleven".