20123130401 has 12 divisors (see below), whose sum is σ = 23319793680. Its totient is φ = 17217648960.

The previous prime is 20123130389. The next prime is 20123130407. The reversal of 20123130401 is 10403132102.

It is a de Polignac number, because none of the positive numbers 2^k-20123130401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20123130401.

It is not an unprimeable number, because it can be changed into a prime (20123130407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3161831 + ... + 3168188.

It is an arithmetic number, because the mean of its divisors is an integer number (1943316140).

Almost surely, 2^20123130401 is an apocalyptic number.

It is an amenable number.

20123130401 is a deficient number, since it is larger than the sum of its proper divisors (3196663279).

20123130401 is a wasteful number, since it uses less digits than its factorization.

20123130401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6330064 (or 6330047 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20123130401 its reverse (10403132102), we get a palindrome (30526262503).

The spelling of 20123130401 in words is "twenty billion, one hundred twenty-three million, one hundred thirty thousand, four hundred one".