1323001131000 has 64 divisors (see below), whose sum is σ = 4127763538080. Its totient is φ = 352800300800.

The previous prime is 1323001130989. The next prime is 1323001131007. The reversal of 1323001131000 is 1311003231.

It is a super-2 number, since 2×1323001131000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323001131007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220497189 + ... + 220503188.

Almost surely, 2^{1323001131000} is an apocalyptic number.

1323001131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323001131000 is an abundant number, since it is smaller than the sum of its proper divisors (2804762407080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323001131000 is a wasteful number, since it uses less digits than its factorization.

1323001131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441000401 (or 441000387 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 1323001131000 its reverse (1311003231), we get a palindrome (1324312134231).

The spelling of 1323001131000 in words is "one trillion, three hundred twenty-three billion, one million, one hundred thirty-one thousand".