10131031100 has 72 divisors (see below), whose sum is σ = 23030817600. Its totient is φ = 3863059200.

The previous prime is 10131031061. The next prime is 10131031103. The reversal of 10131031100 is 113013101.

It is a happy number.

It is a super-2 number, since 2×10131031100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131031103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206990 + ... + 251210.

Almost surely, 2^10131031100 is an apocalyptic number.

10131031100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10131031100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11515408800).

10131031100 is an abundant number, since it is smaller than the sum of its proper divisors (12899786500).

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

10131031100 is a wasteful number, since it uses less digits than its factorization.

10131031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44343 (or 44336 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

Adding to 10131031100 its reverse (113013101), we get a palindrome (10244044201).

The spelling of 10131031100 in words is "ten billion, one hundred thirty-one million, thirty-one thousand, one hundred".