13031213231064 has 64 divisors (see below), whose sum is σ = 37703329459200. Its totient is φ = 3676074614784.

The previous prime is 13031213231063. The next prime is 13031213231087. The reversal of 13031213231064 is 46013231213031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031213231063) 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, 490915497 + ... + 490942040.

It is an arithmetic number, because the mean of its divisors is an integer number (589114522800).

Almost surely, 2^{13031213231064} is an apocalyptic number.

13031213231064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13031213231064 is an abundant number, since it is smaller than the sum of its proper divisors (24672116228136).

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

13031213231064 is a wasteful number, since it uses less digits than its factorization.

13031213231064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981857632 (or 981857628 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 13031213231064 its reverse (46013231213031), we get a palindrome (59044444444095).

The spelling of 13031213231064 in words is "thirteen trillion, thirty-one billion, two hundred thirteen million, two hundred thirty-one thousand, sixty-four".