1023673021 has 4 divisors (see below), whose sum is σ = 1169912032. Its totient is φ = 877434012.

The previous prime is 1023673009. The next prime is 1023673033. The reversal of 1023673021 is 1203763201.

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 an interprime number because it is at equal distance from previous prime (1023673009) and next prime (1023673033).

It is not a de Polignac number, because 1023673021 - 2⁹ = 1023672509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023673081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73119495 + ... + 73119508.

It is an arithmetic number, because the mean of its divisors is an integer number (292478008).

Almost surely, 2^1023673021 is an apocalyptic number.

It is an amenable number.

1023673021 is a deficient number, since it is larger than the sum of its proper divisors (146239011).

1023673021 is an equidigital number, since it uses as much as digits as its factorization.

1023673021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146239010.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1023673021 is about 31994.8905452105. The cubic root of 1023673021 is about 1007.8295452331.

The spelling of 1023673021 in words is "one billion, twenty-three million, six hundred seventy-three thousand, twenty-one".