1312540064 has 96 divisors (see below), whose sum is σ = 2983780800. Its totient is φ = 562083840.

The previous prime is 1312540051. The next prime is 1312540067. The reversal of 1312540064 is 4600452131.

It is a super-2 number, since 2×1312540064² = 3445522839210248192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312540067) 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, 1531124 + ... + 1531980.

It is an arithmetic number, because the mean of its divisors is an integer number (31081050).

Almost surely, 2^1312540064 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 1312540064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491890400).

1312540064 is an abundant number, since it is smaller than the sum of its proper divisors (1671240736).

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

1312540064 is a wasteful number, since it uses less digits than its factorization.

1312540064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1312540064 is about 36228.9947969855. The cubic root of 1312540064 is about 1094.8909252431.

Adding to 1312540064 its reverse (4600452131), we get a palindrome (5912992195).

The spelling of 1312540064 in words is "one billion, three hundred twelve million, five hundred forty thousand, sixty-four".