10131123012 has 24 divisors (see below), whose sum is σ = 23645829312. Its totient is φ = 3376106400.

The previous prime is 10131122993. The next prime is 10131123017. The reversal of 10131123012 is 21032113101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10131122982 and 10131123000.

It is not an unprimeable number, because it can be changed into a prime (10131123017) 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, 70939 + ... + 159042.

It is an arithmetic number, because the mean of its divisors is an integer number (985242888).

Almost surely, 2^10131123012 is an apocalyptic number.

10131123012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10131123012 is an abundant number, since it is smaller than the sum of its proper divisors (13514706300).

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

10131123012 is a wasteful number, since it uses less digits than its factorization.

10131123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233659 (or 233657 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10131123012 its reverse (21032113101), we get a palindrome (31163236113).

The spelling of 10131123012 in words is "ten billion, one hundred thirty-one million, one hundred twenty-three thousand, twelve".