1312441140 has 48 divisors (see below), whose sum is σ = 3891004992. Its totient is φ = 329396736.

The previous prime is 1312441127. The next prime is 1312441153. The reversal of 1312441140 is 411442131.

It is an interprime number because it is at equal distance from previous prime (1312441127) and next prime (1312441153).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642334 + ... + 644373.

It is an arithmetic number, because the mean of its divisors is an integer number (81062604).

Almost surely, 2^1312441140 is an apocalyptic number.

1312441140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312441140 is an abundant number, since it is smaller than the sum of its proper divisors (2578563852).

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

1312441140 is a wasteful number, since it uses less digits than its factorization.

1312441140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286736 (or 1286734 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1312441140 is about 36227.6295111894. The cubic root of 1312441140 is about 1094.8634178386.

Adding to 1312441140 its reverse (411442131), we get a palindrome (1723883271).

Subtracting from 1312441140 its reverse (411442131), we obtain a palindrome (900999009).

The spelling of 1312441140 in words is "one billion, three hundred twelve million, four hundred forty-one thousand, one hundred forty".