1020323231653 has 4 divisors (see below), whose sum is σ = 1113079889088. Its totient is φ = 927566574220.

The previous prime is 1020323231647. The next prime is 1020323231671. The reversal of 1020323231653 is 3561323230201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1020323231653 - 2¹⁷ = 1020323100581 is a prime.

It is a super-2 number, since 2×1020323231653² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020323234653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46378328701 + ... + 46378328722.

It is an arithmetic number, because the mean of its divisors is an integer number (278269972272).

Almost surely, 2^{1020323231653} is an apocalyptic number.

It is an amenable number.

1020323231653 is a deficient number, since it is larger than the sum of its proper divisors (92756657435).

1020323231653 is an equidigital number, since it uses as much as digits as its factorization.

1020323231653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92756657434.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 1020323231653 its reverse (3561323230201), we get a palindrome (4581646461854).

The spelling of 1020323231653 in words is "one trillion, twenty billion, three hundred twenty-three million, two hundred thirty-one thousand, six hundred fifty-three".