1002311023 has 6 divisors (see below), whose sum is σ = 1165953696. Its totient is φ = 859123692.

The previous prime is 1002310993. The next prime is 1002311027. The reversal of 1002311023 is 3201132001.

It is not a de Polignac number, because 1002311023 - 2¹³ = 1002302831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002310994 and 1002311012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002311027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10227615 + ... + 10227712.

It is an arithmetic number, because the mean of its divisors is an integer number (194325616).

Almost surely, 2^1002311023 is an apocalyptic number.

1002311023 is a deficient number, since it is larger than the sum of its proper divisors (163642673).

1002311023 is an equidigital number, since it uses as much as digits as its factorization.

1002311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20455341 (or 20455334 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1002311023 is about 31659.2959965947. The cubic root of 1002311023 is about 1000.7697483355.

Adding to 1002311023 its reverse (3201132001), we get a palindrome (4203443024).

The spelling of 1002311023 in words is "one billion, two million, three hundred eleven thousand, twenty-three".