1331530351357 has 2 divisors, whose sum is σ = 1331530351358. Its totient is φ = 1331530351356.

The previous prime is 1331530351321. The next prime is 1331530351373. The reversal of 1331530351357 is 7531530351331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1327792985401 + 3737365956 = 1152299^2 + 61134^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331530351357 - 2³⁵ = 1297170612989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331530351397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665765175678 + 665765175679.

It is an arithmetic number, because the mean of its divisors is an integer number (665765175679).

Almost surely, 2^{1331530351357} is an apocalyptic number.

It is an amenable number.

1331530351357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331530351357 is an equidigital number, since it uses as much as digits as its factorization.

1331530351357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 212625, while the sum is 40.

The spelling of 1331530351357 in words is "one trillion, three hundred thirty-one billion, five hundred thirty million, three hundred fifty-one thousand, three hundred fifty-seven".