1311423323501 has 8 divisors (see below), whose sum is σ = 1323703831680. Its totient is φ = 1299143263968.

The previous prime is 1311423323489. The next prime is 1311423323521. The reversal of 1311423323501 is 1053233241131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311423323501 - 2²² = 1311419129197 is a prime.

It is a super-2 number, since 2×1311423323501² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311423323521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10040945 + ... + 10170713.

It is an arithmetic number, because the mean of its divisors is an integer number (165462978960).

Almost surely, 2^{1311423323501} is an apocalyptic number.

It is an amenable number.

1311423323501 is a deficient number, since it is larger than the sum of its proper divisors (12280508179).

1311423323501 is a wasteful number, since it uses less digits than its factorization.

1311423323501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224323.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 1311423323501 its reverse (1053233241131), we get a palindrome (2364656564632).

The spelling of 1311423323501 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, three hundred twenty-three thousand, five hundred one".