21203031341 has 2 divisors, whose sum is σ = 21203031342. Its totient is φ = 21203031340.

The previous prime is 21203031299. The next prime is 21203031383. The reversal of 21203031341 is 14313030212.

It is a balanced prime because it is at equal distance from previous prime (21203031299) and next prime (21203031383).

It can be written as a sum of positive squares in only one way, i.e., 18212582116 + 2990449225 = 134954^2 + 54685^2 .

It is a cyclic number.

It is not a de Polignac number, because 21203031341 - 2⁶ = 21203031277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21203037341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601515670 + 10601515671.

It is an arithmetic number, because the mean of its divisors is an integer number (10601515671).

Almost surely, 2^21203031341 is an apocalyptic number.

It is an amenable number.

21203031341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21203031341 is an equidigital number, since it uses as much as digits as its factorization.

21203031341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21203031341 its reverse (14313030212), we get a palindrome (35516061553).

The spelling of 21203031341 in words is "twenty-one billion, two hundred three million, thirty-one thousand, three hundred forty-one".