13231064 has 64 divisors (see below), whose sum is σ = 31656960. Its totient is φ = 5034240.

The previous prime is 13231061. The next prime is 13231067. The reversal of 13231064 is 46013231.

It is an interprime number because it is at equal distance from previous prime (13231061) and next prime (13231067).

It is a super-2 number, since 2×13231064² = 350122109144192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28724 + ... + 29180.

It is an arithmetic number, because the mean of its divisors is an integer number (494640).

Almost surely, 2^13231064 is an apocalyptic number.

13231064 is a gapful number since it is divisible by the number (14) 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 13231064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15828480).

13231064 is an abundant number, since it is smaller than the sum of its proper divisors (18425896).

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

13231064 is a wasteful number, since it uses less digits than its factorization.

13231064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13231064 is about 3637.4529550222. The cubic root of 13231064 is about 236.5183950816.

Adding to 13231064 its reverse (46013231), we get a palindrome (59244295).

The spelling of 13231064 in words is "thirteen million, two hundred thirty-one thousand, sixty-four".