1312034240 has 112 divisors (see below), whose sum is σ = 3526109280. Its totient is φ = 460615680.

The previous prime is 1312034233. The next prime is 1312034293. The reversal of 1312034240 is 424302131.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 95654 + ... + 108506.

Almost surely, 2^1312034240 is an apocalyptic number.

1312034240 is a gapful number since it is divisible by the number (10) 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 1312034240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763054640).

1312034240 is an abundant number, since it is smaller than the sum of its proper divisors (2214075040).

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

1312034240 is a wasteful number, since it uses less digits than its factorization.

1312034240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12910 (or 12900 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1312034240 is about 36222.0131963976. The cubic root of 1312034240 is about 1094.7502582312.

Adding to 1312034240 its reverse (424302131), we get a palindrome (1736336371).

The spelling of 1312034240 in words is "one billion, three hundred twelve million, thirty-four thousand, two hundred forty".