1023323420 has 48 divisors (see below), whose sum is σ = 2459851968. Its totient is φ = 350300160.

The previous prime is 1023323359. The next prime is 1023323443. The reversal of 1023323420 is 243233201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1023323392 and 1023323401.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 88790 + ... + 99650.

It is an arithmetic number, because the mean of its divisors is an integer number (51246916).

Almost surely, 2^1023323420 is an apocalyptic number.

1023323420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023323420 is an abundant number, since it is smaller than the sum of its proper divisors (1436528548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023323420 is a wasteful number, since it uses less digits than its factorization.

1023323420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11550 (or 11548 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1023323420 is about 31989.4266907052. The cubic root of 1023323420 is about 1007.7148021048.

Adding to 1023323420 its reverse (243233201), we get a palindrome (1266556621).

The spelling of 1023323420 in words is "one billion, twenty-three million, three hundred twenty-three thousand, four hundred twenty".