20310123401 has 4 divisors (see below), whose sum is σ = 20965288704. Its totient is φ = 19654958100.

The previous prime is 20310123391. The next prime is 20310123413. The reversal of 20310123401 is 10432101302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20310123401 - 2¹⁴ = 20310107017 is a prime.

It is a super-2 number, since 2×20310123401² (a number of 21 digits) contains 22 as substring.

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 20310123401.

It is not an unprimeable number, because it can be changed into a prime (20310123451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327582605 + ... + 327582666.

It is an arithmetic number, because the mean of its divisors is an integer number (5241322176).

Almost surely, 2^20310123401 is an apocalyptic number.

It is an amenable number.

20310123401 is a deficient number, since it is larger than the sum of its proper divisors (655165303).

20310123401 is an equidigital number, since it uses as much as digits as its factorization.

20310123401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655165302.

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

Adding to 20310123401 its reverse (10432101302), we get a palindrome (30742224703).

The spelling of 20310123401 in words is "twenty billion, three hundred ten million, one hundred twenty-three thousand, four hundred one".