1023121988 has 12 divisors (see below), whose sum is σ = 2046244032. Its totient is φ = 438480840.

The previous prime is 1023121987. The next prime is 1023121997. The reversal of 1023121988 is 8891213201.

1023121988 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1023121987) 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 3 ways as a sum of consecutive naturals, for example, 18270008 + ... + 18270063.

It is an arithmetic number, because the mean of its divisors is an integer number (170520336).

Almost surely, 2^1023121988 is an apocalyptic number.

It is an amenable number.

1023121988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1023121988 is a wasteful number, since it uses less digits than its factorization.

1023121988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36540082 (or 36540080 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 1023121988 is about 31986.2781204691. The cubic root of 1023121988 is about 1007.6486779046.

The spelling of 1023121988 in words is "one billion, twenty-three million, one hundred twenty-one thousand, nine hundred eighty-eight".