1020321531145 has 8 divisors (see below), whose sum is σ = 1399298099904. Its totient is φ = 699649049904.

The previous prime is 1020321531113. The next prime is 1020321531157. The reversal of 1020321531145 is 5411351230201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020321531145 - 2⁵ = 1020321531113 is a prime.

It is a super-2 number, since 2×1020321531145² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14576021839 + ... + 14576021908.

It is an arithmetic number, because the mean of its divisors is an integer number (174912262488).

Almost surely, 2^{1020321531145} is an apocalyptic number.

It is an amenable number.

1020321531145 is a deficient number, since it is larger than the sum of its proper divisors (378976568759).

1020321531145 is an equidigital number, since it uses as much as digits as its factorization.

1020321531145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29152043759.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 1020321531145 its reverse (5411351230201), we get a palindrome (6431672761346).

The spelling of 1020321531145 in words is "one trillion, twenty billion, three hundred twenty-one million, five hundred thirty-one thousand, one hundred forty-five".