13123213131000 has 256 divisors, whose sum is σ = 46811965824000. Its totient is φ = 2998416115200.

The previous prime is 13123213130999. The next prime is 13123213131029. The reversal of 13123213131000 is 13131232131.

It is a happy number.

It is a super-2 number, since 2×13123213131000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54037846 + ... + 54280154.

It is an arithmetic number, because the mean of its divisors is an integer number (182859241500).

Almost surely, 2^{13123213131000} is an apocalyptic number.

13123213131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13123213131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23405982912000).

13123213131000 is an abundant number, since it is smaller than the sum of its proper divisors (33688752693000).

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

13123213131000 is a wasteful number, since it uses less digits than its factorization.

13123213131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244919 (or 244905 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 13123213131000 its reverse (13131232131), we get a palindrome (13136344363131).

The spelling of 13123213131000 in words is "thirteen trillion, one hundred twenty-three billion, two hundred thirteen million, one hundred thirty-one thousand".