101231880 has 64 divisors (see below), whose sum is σ = 304464960. Its totient is φ = 26926848.

The previous prime is 101231857. The next prime is 101231881. The reversal of 101231880 is 88132101.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 101231880.

It is not an unprimeable number, because it can be changed into a prime (101231881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61954 + ... + 63566.

It is an arithmetic number, because the mean of its divisors is an integer number (4757265).

Almost surely, 2^101231880 is an apocalyptic number.

101231880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101231880 is an abundant number, since it is smaller than the sum of its proper divisors (203233080).

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

101231880 is a wasteful number, since it uses less digits than its factorization.

101231880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2146 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 101231880 is about 10061.4054684224. The cubic root of 101231880 is about 466.0570702575.

Adding to 101231880 its reverse (88132101), we get a palindrome (189363981).

The spelling of 101231880 in words is "one hundred one million, two hundred thirty-one thousand, eight hundred eighty".