1293000003923 has 4 divisors (see below), whose sum is σ = 1293011101920. Its totient is φ = 1292988905928.

The previous prime is 1293000003871. The next prime is 1293000003941. The reversal of 1293000003923 is 3293000003921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1293000003923 - 2¹² = 1292999999827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1293000003923.

It is not an unprimeable number, because it can be changed into a prime (1293000003973) 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 3 ways as a sum of consecutive naturals, for example, 5372363 + ... + 5607876.

It is an arithmetic number, because the mean of its divisors is an integer number (323252775480).

Almost surely, 2^{1293000003923} is an apocalyptic number.

1293000003923 is a deficient number, since it is larger than the sum of its proper divisors (11097997).

1293000003923 is a wasteful number, since it uses less digits than its factorization.

1293000003923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11097996.

The product of its (nonzero) digits is 8748, while the sum is 32.

The spelling of 1293000003923 in words is "one trillion, two hundred ninety-three billion, three thousand, nine hundred twenty-three".