1020311351405 has 16 divisors (see below), whose sum is σ = 1226738036160. Its totient is φ = 814673257728.

The previous prime is 1020311351393. The next prime is 1020311351419. The reversal of 1020311351405 is 5041531130201.

It is a cyclic number.

It is not a de Polignac number, because 1020311351405 - 2²⁰ = 1020310302829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20972789 + ... + 21021381.

It is an arithmetic number, because the mean of its divisors is an integer number (76671127260).

Almost surely, 2^{1020311351405} is an apocalyptic number.

It is an amenable number.

1020311351405 is a deficient number, since it is larger than the sum of its proper divisors (206426684755).

1020311351405 is an equidigital number, since it uses as much as digits as its factorization.

1020311351405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56620.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1020311351405 its reverse (5041531130201), we get a palindrome (6061842481606).

The spelling of 1020311351405 in words is "one trillion, twenty billion, three hundred eleven million, three hundred fifty-one thousand, four hundred five".