100531503012 has 24 divisors (see below), whose sum is σ = 234618073312. Its totient is φ = 33504134400.

The previous prime is 100531503011. The next prime is 100531503029. The reversal of 100531503012 is 210305135001.

It is a self number, because there is not a number n which added to its sum of digits gives 100531503012.

It is not an unprimeable number, because it can be changed into a prime (100531503011) 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, 729814 + ... + 856557.

Almost surely, 2^100531503012 is an apocalyptic number.

100531503012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100531503012 is an abundant number, since it is smaller than the sum of its proper divisors (134086570300).

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

100531503012 is a wasteful number, since it uses less digits than its factorization.

100531503012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591659 (or 1591657 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

Adding to 100531503012 its reverse (210305135001), we get a palindrome (310836638013).

The spelling of 100531503012 in words is "one hundred billion, five hundred thirty-one million, five hundred three thousand, twelve".