20311113401 has 8 divisors (see below), whose sum is σ = 21200802624. Its totient is φ = 19421974000.

The previous prime is 20311113397. The next prime is 20311113419. The reversal of 20311113401 is 10431111302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20311113401 - 2² = 20311113397 is a prime.

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 20311113401.

It is not an unprimeable number, because it can be changed into a prime (20311113701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61046 + ... + 210591.

It is an arithmetic number, because the mean of its divisors is an integer number (2650100328).

Almost surely, 2^20311113401 is an apocalyptic number.

It is an amenable number.

20311113401 is a deficient number, since it is larger than the sum of its proper divisors (889689223).

20311113401 is a wasteful number, since it uses less digits than its factorization.

20311113401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274911.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20311113401 its reverse (10431111302), we get a palindrome (30742224703).

The spelling of 20311113401 in words is "twenty billion, three hundred eleven million, one hundred thirteen thousand, four hundred one".