1312331700 has 144 divisors (see below), whose sum is σ = 4008493440. Its totient is φ = 330823680.

The previous prime is 1312331659. The next prime is 1312331707. The reversal of 1312331700 is 71332131.

1312331700 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312331707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 613032 + ... + 615168.

It is an arithmetic number, because the mean of its divisors is an integer number (27836760).

Almost surely, 2^1312331700 is an apocalyptic number.

1312331700 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 1312331700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2004246720).

1312331700 is an abundant number, since it is smaller than the sum of its proper divisors (2696161740).

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

1312331700 is a wasteful number, since it uses less digits than its factorization.

1312331700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 1312331700 is about 36226.1190303350. The cubic root of 1312331700 is about 1094.8329846813.

Adding to 1312331700 its reverse (71332131), we get a palindrome (1383663831).

The spelling of 1312331700 in words is "one billion, three hundred twelve million, three hundred thirty-one thousand, seven hundred".