101031880 has 16 divisors (see below), whose sum is σ = 227321820. Its totient is φ = 40412736.

The previous prime is 101031871. The next prime is 101031881. The reversal of 101031880 is 88130101.

It can be written as a sum of positive squares in 2 ways, for example, as 98763844 + 2268036 = 9938^2 + 1506^2 .

It is not an unprimeable number, because it can be changed into a prime (101031881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262859 + ... + 1262938.

Almost surely, 2^101031880 is an apocalyptic number.

101031880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101031880 is an abundant number, since it is smaller than the sum of its proper divisors (126289940).

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

101031880 is a wasteful number, since it uses less digits than its factorization.

101031880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525808 (or 2525804 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 101031880 is about 10051.4615852621. The cubic root of 101031880 is about 465.7499441286.

Adding to 101031880 its reverse (88130101), we get a palindrome (189161981).

The spelling of 101031880 in words is "one hundred one million, thirty-one thousand, eight hundred eighty".