103131020 has 12 divisors (see below), whose sum is σ = 216575184. Its totient is φ = 41252400.

The previous prime is 103130983. The next prime is 103131043. The reversal of 103131020 is 20131301.

It is a junction number, because it is equal to n+sod(n) for n = 103130992 and 103131010.

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 3 ways as a sum of consecutive naturals, for example, 2578256 + ... + 2578295.

It is an arithmetic number, because the mean of its divisors is an integer number (18047932).

Almost surely, 2^103131020 is an apocalyptic number.

103131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103131020 is an abundant number, since it is smaller than the sum of its proper divisors (113444164).

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

103131020 is a wasteful number, since it uses less digits than its factorization.

103131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156560 (or 5156558 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 103131020 is about 10155.3444057796. The cubic root of 103131020 is about 468.9534886583.

Adding to 103131020 its reverse (20131301), we get a palindrome (123262321).

The spelling of 103131020 in words is "one hundred three million, one hundred thirty-one thousand, twenty".