20402312341 has 2 divisors, whose sum is σ = 20402312342. Its totient is φ = 20402312340.

The previous prime is 20402312291. The next prime is 20402312369. The reversal of 20402312341 is 14321320402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11821995441 + 8580316900 = 108729^2 + 92630^2 .

It is a cyclic number.

It is not a de Polignac number, because 20402312341 - 2²⁹ = 19865441429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20402312141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201156170 + 10201156171.

It is an arithmetic number, because the mean of its divisors is an integer number (10201156171).

Almost surely, 2^20402312341 is an apocalyptic number.

It is an amenable number.

20402312341 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402312341 is an equidigital number, since it uses as much as digits as its factorization.

20402312341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20402312341 its reverse (14321320402), we get a palindrome (34723632743).

The spelling of 20402312341 in words is "twenty billion, four hundred two million, three hundred twelve thousand, three hundred forty-one".