1131031030121 has 4 divisors (see below), whose sum is σ = 1141407461700. Its totient is φ = 1120654598544.

The previous prime is 1131031030099. The next prime is 1131031030127. The reversal of 1131031030121 is 1210301301311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 991689338896 + 139341691225 = 995836^2 + 373285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131031030121 - 2²⁶ = 1130963921257 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 1131031030121.

It is not an unprimeable number, because it can be changed into a prime (1131031030127) 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, 5188215626 + ... + 5188215843.

It is an arithmetic number, because the mean of its divisors is an integer number (285351865425).

Almost surely, 2^{1131031030121} is an apocalyptic number.

It is an amenable number.

1131031030121 is a deficient number, since it is larger than the sum of its proper divisors (10376431579).

1131031030121 is a wasteful number, since it uses less digits than its factorization.

1131031030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376431578.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1131031030121 its reverse (1210301301311), we get a palindrome (2341332331432).

The spelling of 1131031030121 in words is "one trillion, one hundred thirty-one billion, thirty-one million, thirty thousand, one hundred twenty-one".