1131312322231 has 16 divisors (see below), whose sum is σ = 1392426961408. Its totient is φ = 895076892000.

The previous prime is 1131312322211. The next prime is 1131312322267. The reversal of 1131312322231 is 1322232131311.

It is a cyclic number.

It is not a de Polignac number, because 1131312322231 - 2¹¹ = 1131312320183 is a prime.

It is a super-2 number, since 2×1131312322231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131312322196 and 1131312322205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131312322211) 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, 3117796 + ... + 3461686.

It is an arithmetic number, because the mean of its divisors is an integer number (87026685088).

Almost surely, 2^{1131312322231} is an apocalyptic number.

1131312322231 is a deficient number, since it is larger than the sum of its proper divisors (261114639177).

1131312322231 is a wasteful number, since it uses less digits than its factorization.

1131312322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380062.

The product of its digits is 1296, while the sum is 25.

Adding to 1131312322231 its reverse (1322232131311), we get a palindrome (2453544453542).

The spelling of 1131312322231 in words is "one trillion, one hundred thirty-one billion, three hundred twelve million, three hundred twenty-two thousand, two hundred thirty-one".