13131123000 has 128 divisors (see below), whose sum is σ = 43379219520. Its totient is φ = 3295641600.

The previous prime is 13131122987. The next prime is 13131123001. The reversal of 13131123000 is 32113131.

It is a super-2 number, since 2×13131123000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131123001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77737 + ... + 179736.

Almost surely, 2^13131123000 is an apocalyptic number.

13131123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131123000 is an abundant number, since it is smaller than the sum of its proper divisors (30248096520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131123000 is a wasteful number, since it uses less digits than its factorization.

13131123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257514 (or 257500 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 13131123000 its reverse (32113131), we get a palindrome (13163236131).

The spelling of 13131123000 in words is "thirteen billion, one hundred thirty-one million, one hundred twenty-three thousand".