1231064064 has 198 divisors, whose sum is σ = 3699461220. Its totient is φ = 394260480.

The previous prime is 1231064063. The next prime is 1231064083. The reversal of 1231064064 is 4604601321.

1231064064 is a `hidden beast` number, since 1 + 2 + 3 + 10 + 640 + 6 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (1231064063) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8856507 + ... + 8856645.

Almost surely, 2^1231064064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231064064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849730610).

1231064064 is an abundant number, since it is smaller than the sum of its proper divisors (2468397156).

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

1231064064 is a wasteful number, since it uses less digits than its factorization.

1231064064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1231064064 is about 35086.5225407135. The cubic root of 1231064064 is about 1071.7501459732.

Adding to 1231064064 its reverse (4604601321), we get a palindrome (5835665385).

The spelling of 1231064064 in words is "one billion, two hundred thirty-one million, sixty-four thousand, sixty-four".