101023020 has 72 divisors (see below), whose sum is σ = 350217504. Its totient is φ = 23090688.

The previous prime is 101023007. The next prime is 101023051. The reversal of 101023020 is 20320101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 101022993 and 101023011.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 38829 + ... + 41348.

It is an arithmetic number, because the mean of its divisors is an integer number (4864132).

Almost surely, 2^101023020 is an apocalyptic number.

101023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101023020 is an abundant number, since it is smaller than the sum of its proper divisors (249194484).

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

101023020 is a wasteful number, since it uses less digits than its factorization.

101023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80199 (or 80194 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 101023020 is about 10051.0208436755. The cubic root of 101023020 is about 465.7363290692.

Adding to 101023020 its reverse (20320101), we get a palindrome (121343121).

The spelling of 101023020 in words is "one hundred one million, twenty-three thousand, twenty".