1023311233220 has 24 divisors (see below), whose sum is σ = 2164639388184. Its totient is φ = 406336722176.

The previous prime is 1023311233187. The next prime is 1023311233237. The reversal of 1023311233220 is 223321133201.

It can be written as a sum of positive squares in 4 ways, for example, as 157845700804 + 865465532416 = 397298^2 + 930304^2 .

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, 186732887 + ... + 186738366.

It is an arithmetic number, because the mean of its divisors is an integer number (90193307841).

Almost surely, 2^{1023311233220} is an apocalyptic number.

1023311233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023311233220 is an abundant number, since it is smaller than the sum of its proper divisors (1141328154964).

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

1023311233220 is a wasteful number, since it uses less digits than its factorization.

1023311233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373471399 (or 373471397 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1023311233220 its reverse (223321133201), we get a palindrome (1246632366421).

The spelling of 1023311233220 in words is "one trillion, twenty-three billion, three hundred eleven million, two hundred thirty-three thousand, two hundred twenty".