1303031213123 has 4 divisors (see below), whose sum is σ = 1311776389200. Its totient is φ = 1294286037048.

The previous prime is 1303031213117. The next prime is 1303031213129. The reversal of 1303031213123 is 3213121303031.

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

It is an interprime number because it is at equal distance from previous prime (1303031213117) and next prime (1303031213129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1303031213123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303031213129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4372587815 + ... + 4372588112.

It is an arithmetic number, because the mean of its divisors is an integer number (327944097300).

Almost surely, 2^{1303031213123} is an apocalyptic number.

1303031213123 is a deficient number, since it is larger than the sum of its proper divisors (8745176077).

1303031213123 is an equidigital number, since it uses as much as digits as its factorization.

1303031213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8745176076.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1303031213123 its reverse (3213121303031), we get a palindrome (4516152516154).

The spelling of 1303031213123 in words is "one trillion, three hundred three billion, thirty-one million, two hundred thirteen thousand, one hundred twenty-three".