1313033021123 has 4 divisors (see below), whose sum is σ = 1323056174088. Its totient is φ = 1303009868160.

The previous prime is 1313033021101. The next prime is 1313033021149. The reversal of 1313033021123 is 3211203303131.

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 1313033021123 - 2¹² = 1313033017027 is a prime.

It is a super-2 number, since 2×1313033021123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313033021173) 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, 5011576286 + ... + 5011576547.

It is an arithmetic number, because the mean of its divisors is an integer number (330764043522).

Almost surely, 2^{1313033021123} is an apocalyptic number.

1313033021123 is a deficient number, since it is larger than the sum of its proper divisors (10023152965).

1313033021123 is a wasteful number, since it uses less digits than its factorization.

1313033021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10023152964.

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

Adding to 1313033021123 its reverse (3211203303131), we get a palindrome (4524236324254).

The spelling of 1313033021123 in words is "one trillion, three hundred thirteen billion, thirty-three million, twenty-one thousand, one hundred twenty-three".