102311020 has 36 divisors (see below), whose sum is σ = 249933600. Its totient is φ = 35077728.

The previous prime is 102311003. The next prime is 102311059. The reversal of 102311020 is 20113201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102310988 and 102311006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51220 + ... + 53179.

It is an arithmetic number, because the mean of its divisors is an integer number (6942600).

Almost surely, 2^102311020 is an apocalyptic number.

102311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102311020 is an abundant number, since it is smaller than the sum of its proper divisors (147622580).

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

102311020 is a wasteful number, since it uses less digits than its factorization.

102311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104422 (or 104413 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 102311020 is about 10114.8910028729. The cubic root of 102311020 is about 467.7072888978.

Adding to 102311020 its reverse (20113201), we get a palindrome (122424221).

The spelling of 102311020 in words is "one hundred two million, three hundred eleven thousand, twenty".