1031131203111 has 6 divisors (see below), whose sum is σ = 1489411737840. Its totient is φ = 687420802068.

The previous prime is 1031131203083. The next prime is 1031131203149. The reversal of 1031131203111 is 1113021311301.

1031131203111 is a `hidden beast` number, since 1 + 0 + 311 + 312 + 0 + 31 + 11 = 666.

It is not a de Polignac number, because 1031131203111 - 2⁹ = 1031131202599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031131203811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57285066831 + ... + 57285066848.

It is an arithmetic number, because the mean of its divisors is an integer number (248235289640).

Almost surely, 2^{1031131203111} is an apocalyptic number.

1031131203111 is a deficient number, since it is larger than the sum of its proper divisors (458280534729).

1031131203111 is a wasteful number, since it uses less digits than its factorization.

1031131203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114570133685 (or 114570133682 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1031131203111 its reverse (1113021311301), we get a palindrome (2144152514412).

The spelling of 1031131203111 in words is "one trillion, thirty-one billion, one hundred thirty-one million, two hundred three thousand, one hundred eleven".