1130311312021 has 16 divisors (see below), whose sum is σ = 1141147311408. Its totient is φ = 1119515443200.

The previous prime is 1130311311959. The next prime is 1130311312043. The reversal of 1130311312021 is 1202131130311.

It can be written as a sum of positive squares in 8 ways, for example, as 88380749521 + 1041930562500 = 297289^2 + 1020750^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130311312021 - 2¹¹ = 1130311309973 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 1130311312021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130311312421) 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, 152885701 + ... + 152893093.

It is an arithmetic number, because the mean of its divisors is an integer number (71321706963).

Almost surely, 2^{1130311312021} is an apocalyptic number.

It is an amenable number.

1130311312021 is a deficient number, since it is larger than the sum of its proper divisors (10835999387).

1130311312021 is a wasteful number, since it uses less digits than its factorization.

1130311312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9912.

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

Adding to 1130311312021 its reverse (1202131130311), we get a palindrome (2332442442332).

The spelling of 1130311312021 in words is "one trillion, one hundred thirty billion, three hundred eleven million, three hundred twelve thousand, twenty-one".