1031231231311 has 16 divisors (see below), whose sum is σ = 1047985128000. Its totient is φ = 1014618528000.

The previous prime is 1031231231287. The next prime is 1031231231399. The reversal of 1031231231311 is 1131321321301.

It is not a de Polignac number, because 1031231231311 - 2³¹ = 1029083747663 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 (1031231231711) 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, 16228381 + ... + 16291801.

It is an arithmetic number, because the mean of its divisors is an integer number (65499070500).

Almost surely, 2^{1031231231311} is an apocalyptic number.

1031231231311 is a deficient number, since it is larger than the sum of its proper divisors (16753896689).

1031231231311 is a wasteful number, since it uses less digits than its factorization.

1031231231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64530.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1031231231311 its reverse (1131321321301), we get a palindrome (2162552552612).

The spelling of 1031231231311 in words is "one trillion, thirty-one billion, two hundred thirty-one million, two hundred thirty-one thousand, three hundred eleven".