100231520 has 48 divisors (see below), whose sum is σ = 243211248. Its totient is φ = 39006720.

The previous prime is 100231519. The next prime is 100231553. The reversal of 100231520 is 25132001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100231495 and 100231504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2546 + ... + 14385.

It is an arithmetic number, because the mean of its divisors is an integer number (5066901).

Almost surely, 2^100231520 is an apocalyptic number.

100231520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100231520 is an abundant number, since it is smaller than the sum of its proper divisors (142979728).

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

100231520 is a wasteful number, since it uses less digits than its factorization.

100231520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16983 (or 16975 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 100231520 is about 10011.5693075561. The cubic root of 100231520 is about 464.5168141584.

Adding to 100231520 its reverse (25132001), we get a palindrome (125363521).

The spelling of 100231520 in words is "one hundred million, two hundred thirty-one thousand, five hundred twenty".