1311000004357 has 2 divisors, whose sum is σ = 1311000004358. Its totient is φ = 1311000004356.

The previous prime is 1311000004283. The next prime is 1311000004429. The reversal of 1311000004357 is 7534000001131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815723274276 + 495276730081 = 903174^2 + 703759^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311000004357 - 2²³ = 1310991615749 is a prime.

It is a super-2 number, since 2×1311000004357² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311000044357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655500002178 + 655500002179.

It is an arithmetic number, because the mean of its divisors is an integer number (655500002179).

Almost surely, 2^{1311000004357} is an apocalyptic number.

It is an amenable number.

1311000004357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311000004357 is an equidigital number, since it uses as much as digits as its factorization.

1311000004357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 1311000004357 its reverse (7534000001131), we get a palindrome (8845000005488).

The spelling of 1311000004357 in words is "one trillion, three hundred eleven billion, four thousand, three hundred fifty-seven".