1131031013123 has 8 divisors (see below), whose sum is σ = 1233876392496. Its totient is φ = 1028189696800.

The previous prime is 1131031013113. The next prime is 1131031013141. The reversal of 1131031013123 is 3213101301311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131031013123 is a prime.

It is a super-3 number, since 3×1131031013123³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131031013095 and 1131031013104.

It is not an unprimeable number, because it can be changed into a prime (1131031013113) 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, 418436 + ... + 1561137.

It is an arithmetic number, because the mean of its divisors is an integer number (154234549062).

Almost surely, 2^{1131031013123} is an apocalyptic number.

1131031013123 is a deficient number, since it is larger than the sum of its proper divisors (102845379373).

1131031013123 is a wasteful number, since it uses less digits than its factorization.

1131031013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031525.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1131031013123 its reverse (3213101301311), we get a palindrome (4344132314434).

The spelling of 1131031013123 in words is "one trillion, one hundred thirty-one billion, thirty-one million, thirteen thousand, one hundred twenty-three".