103402321020 has 72 divisors (see below), whose sum is σ = 320948003376. Its totient is φ = 26932695552.

The previous prime is 103402321019. The next prime is 103402321073. The reversal of 103402321020 is 20123204301.

103402321020 is a `hidden beast` number, since 1 + 0 + 340 + 2 + 321 + 0 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 103402320984 and 103402321002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6671997 + ... + 6687476.

It is an arithmetic number, because the mean of its divisors is an integer number (4457611158).

Almost surely, 2^103402321020 is an apocalyptic number.

103402321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103402321020 is an abundant number, since it is smaller than the sum of its proper divisors (217545682356).

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

103402321020 is a wasteful number, since it uses less digits than its factorization.

103402321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13359531 (or 13359526 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 103402321020 its reverse (20123204301), we get a palindrome (123525525321).

The spelling of 103402321020 in words is "one hundred three billion, four hundred two million, three hundred twenty-one thousand, twenty".