1002312123 has 32 divisors (see below), whose sum is σ = 1403136000. Its totient is φ = 635623296.

The previous prime is 1002312053. The next prime is 1002312127. The reversal of 1002312123 is 3212132001.

It is not a de Polignac number, because 1002312123 - 2⁸ = 1002311867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002312127) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2164590 + ... + 2165052.

It is an arithmetic number, because the mean of its divisors is an integer number (43848000).

Almost surely, 2^1002312123 is an apocalyptic number.

1002312123 is a deficient number, since it is larger than the sum of its proper divisors (400823877).

1002312123 is a wasteful number, since it uses less digits than its factorization.

1002312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1002312123 is about 31659.3133690546. The cubic root of 1002312123 is about 1000.7701144382.

Adding to 1002312123 its reverse (3212132001), we get a palindrome (4214444124).

The spelling of 1002312123 in words is "one billion, two million, three hundred twelve thousand, one hundred twenty-three".