1020323253 has 16 divisors (see below), whose sum is σ = 1407159936. Its totient is φ = 657173760.

The previous prime is 1020323231. The next prime is 1020323333. The reversal of 1020323253 is 3523230201.

It is not a de Polignac number, because 1020323253 - 2⁸ = 1020322997 is a prime.

It is a super-3 number, since 3×1020323253³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020323453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27600 + ... + 52937.

It is an arithmetic number, because the mean of its divisors is an integer number (87947496).

Almost surely, 2^1020323253 is an apocalyptic number.

It is an amenable number.

1020323253 is a deficient number, since it is larger than the sum of its proper divisors (386836683).

1020323253 is a wasteful number, since it uses less digits than its factorization.

1020323253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80684.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 1020323253 is about 31942.4991664710. The cubic root of 1020323253 is about 1006.7290361754.

Adding to 1020323253 its reverse (3523230201), we get a palindrome (4543553454).

The spelling of 1020323253 in words is "one billion, twenty million, three hundred twenty-three thousand, two hundred fifty-three".