1355206312403 has 2 divisors, whose sum is σ = 1355206312404. Its totient is φ = 1355206312402.

The previous prime is 1355206312393. The next prime is 1355206312457. The reversal of 1355206312403 is 3042136025531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1355206312403 - 2²⁴ = 1355189535187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355206312463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677603156201 + 677603156202.

It is an arithmetic number, because the mean of its divisors is an integer number (677603156202).

Almost surely, 2^{1355206312403} is an apocalyptic number.

1355206312403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355206312403 is an equidigital number, since it uses as much as digits as its factorization.

1355206312403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 1355206312403 in words is "one trillion, three hundred fifty-five billion, two hundred six million, three hundred twelve thousand, four hundred three".