1131123001231 has 8 divisors (see below), whose sum is σ = 1137470796000. Its totient is φ = 1124781328608.

The previous prime is 1131123001213. The next prime is 1131123001247. The reversal of 1131123001231 is 1321003211311.

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 1131123001231 - 2³⁵ = 1096763262863 is a prime.

It is a super-2 number, since 2×1131123001231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131123001199 and 1131123001208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131123001331) 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, 1159731 + ... + 1899268.

It is an arithmetic number, because the mean of its divisors is an integer number (142183849500).

Almost surely, 2^{1131123001231} is an apocalyptic number.

1131123001231 is a deficient number, since it is larger than the sum of its proper divisors (6347794769).

1131123001231 is a wasteful number, since it uses less digits than its factorization.

1131123001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061073.

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

Adding to 1131123001231 its reverse (1321003211311), we get a palindrome (2452126212542).

The spelling of 1131123001231 in words is "one trillion, one hundred thirty-one billion, one hundred twenty-three million, one thousand, two hundred thirty-one".