20401110343 has 2 divisors, whose sum is σ = 20401110344. Its totient is φ = 20401110342.

The previous prime is 20401110313. The next prime is 20401110347. The reversal of 20401110343 is 34301110402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401110343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20401110343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20401110347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200555171 + 10200555172.

It is an arithmetic number, because the mean of its divisors is an integer number (10200555172).

Almost surely, 2^20401110343 is an apocalyptic number.

20401110343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401110343 is an equidigital number, since it uses as much as digits as its factorization.

20401110343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20401110343 its reverse (34301110402), we get a palindrome (54702220745).

The spelling of 20401110343 in words is "twenty billion, four hundred one million, one hundred ten thousand, three hundred forty-three".