1031311101223 has 4 divisors (see below), whose sum is σ = 1110642724408. Its totient is φ = 951979478040.

The previous prime is 1031311101211. The next prime is 1031311101253. The reversal of 1031311101223 is 3221011131301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1031311101223 - 2²¹ = 1031309004071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031311101223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031311101203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39665811573 + ... + 39665811598.

It is an arithmetic number, because the mean of its divisors is an integer number (277660681102).

Almost surely, 2^{1031311101223} is an apocalyptic number.

1031311101223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1031311101223 is a deficient number, since it is larger than the sum of its proper divisors (79331623185).

1031311101223 is an equidigital number, since it uses as much as digits as its factorization.

1031311101223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79331623184.

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

Adding to 1031311101223 its reverse (3221011131301), we get a palindrome (4252322232524).

The spelling of 1031311101223 in words is "one trillion, thirty-one billion, three hundred eleven million, one hundred one thousand, two hundred twenty-three".