100231512 has 16 divisors (see below), whose sum is σ = 250578840. Its totient is φ = 33410496.

The previous prime is 100231499. The next prime is 100231513. The reversal of 100231512 is 215132001.

It is a super-2 number, since 2×100231512² = 20092711995612288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100231491 and 100231500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2088133 + ... + 2088180.

Almost surely, 2^100231512 is an apocalyptic number.

100231512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100231512 is an abundant number, since it is smaller than the sum of its proper divisors (150347328).

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

100231512 is a wasteful number, since it uses less digits than its factorization.

100231512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176322 (or 4176318 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 100231512 is about 10011.5689080184. The cubic root of 100231512 is about 464.5168017999.

Adding to 100231512 its reverse (215132001), we get a palindrome (315363513).

The spelling of 100231512 in words is "one hundred million, two hundred thirty-one thousand, five hundred twelve".