1131312121133 has 8 divisors (see below), whose sum is σ = 1139759471352. Its totient is φ = 1122867518976.

The previous prime is 1131312121129. The next prime is 1131312121139. The reversal of 1131312121133 is 3311212131311.

It can be written as a sum of positive squares in 4 ways, for example, as 398461412644 + 732850708489 = 631238^2 + 856067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131312121133 - 2² = 1131312121129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131312121099 and 1131312121108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131312121139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143141 + ... + 1510997.

It is an arithmetic number, because the mean of its divisors is an integer number (142469933919).

Almost surely, 2^{1131312121133} is an apocalyptic number.

It is an amenable number.

1131312121133 is a deficient number, since it is larger than the sum of its proper divisors (8447350219).

1131312121133 is a wasteful number, since it uses less digits than its factorization.

1131312121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374031.

The product of its digits is 324, while the sum is 23.

Adding to 1131312121133 its reverse (3311212131311), we get a palindrome (4442524252444).

The spelling of 1131312121133 in words is "one trillion, one hundred thirty-one billion, three hundred twelve million, one hundred twenty-one thousand, one hundred thirty-three".