1310121332389 has 2 divisors, whose sum is σ = 1310121332390. Its totient is φ = 1310121332388.

The previous prime is 1310121332297. The next prime is 1310121332413. The reversal of 1310121332389 is 9832331210131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1250892375489 + 59228956900 = 1118433^2 + 243370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310121332389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310121332089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655060666194 + 655060666195.

It is an arithmetic number, because the mean of its divisors is an integer number (655060666195).

Almost surely, 2^{1310121332389} is an apocalyptic number.

It is an amenable number.

1310121332389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310121332389 is an equidigital number, since it uses as much as digits as its factorization.

1310121332389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 1310121332389 in words is "one trillion, three hundred ten billion, one hundred twenty-one million, three hundred thirty-two thousand, three hundred eighty-nine".