13531123100 has 72 divisors (see below), whose sum is σ = 33424610688. Its totient is φ = 4706468800.

The previous prime is 13531123043. The next prime is 13531123141. The reversal of 13531123100 is 132113531.

It is a super-2 number, since 2×13531123100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242114 + ... + 292713.

It is an arithmetic number, because the mean of its divisors is an integer number (464230704).

Almost surely, 2^13531123100 is an apocalyptic number.

13531123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531123100 is an abundant number, since it is smaller than the sum of its proper divisors (19893487588).

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

13531123100 is a wasteful number, since it uses less digits than its factorization.

13531123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534875 (or 534868 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

Adding to 13531123100 its reverse (132113531), we get a palindrome (13663236631).

It can be divided in two parts, 13531 and 123100, that added together give a palindrome (136631).

The spelling of 13531123100 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-three thousand, one hundred".