1023317533813 has 2 divisors, whose sum is σ = 1023317533814. Its totient is φ = 1023317533812.

The previous prime is 1023317533747. The next prime is 1023317533817. The reversal of 1023317533813 is 3183357133201.

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., 863527864644 + 159789669169 = 929262^2 + 399737^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023317533813 - 2¹³ = 1023317525621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023317533817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511658766906 + 511658766907.

It is an arithmetic number, because the mean of its divisors is an integer number (511658766907).

Almost surely, 2^{1023317533813} is an apocalyptic number.

It is an amenable number.

1023317533813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023317533813 is an equidigital number, since it uses as much as digits as its factorization.

1023317533813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 1023317533813 in words is "one trillion, twenty-three billion, three hundred seventeen million, five hundred thirty-three thousand, eight hundred thirteen".