204401311357 has 2 divisors, whose sum is σ = 204401311358. Its totient is φ = 204401311356.

The previous prime is 204401311313. The next prime is 204401311391. The reversal of 204401311357 is 753113104402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159732911556 + 44668399801 = 399666^2 + 211349^2 .

It is a cyclic number.

It is not a de Polignac number, because 204401311357 - 2¹¹ = 204401309309 is a prime.

It is a super-2 number, since 2×204401311357² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204401311957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102200655678 + 102200655679.

It is an arithmetic number, because the mean of its divisors is an integer number (102200655679).

Almost surely, 2^204401311357 is an apocalyptic number.

It is an amenable number.

204401311357 is a deficient number, since it is larger than the sum of its proper divisors (1).

204401311357 is an equidigital number, since it uses as much as digits as its factorization.

204401311357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 204401311357 its reverse (753113104402), we get a palindrome (957514415759).

The spelling of 204401311357 in words is "two hundred four billion, four hundred one million, three hundred eleven thousand, three hundred fifty-seven".