1312031300 has 36 divisors (see below), whose sum is σ = 2856158340. Its totient is φ = 523144320.

The previous prime is 1312031293. The next prime is 1312031323. The reversal of 1312031300 is 31302131.

It can be written as a sum of positive squares in 6 ways, for example, as 123298816 + 1188732484 = 11104^2 + 34478^2 .

It is a super-2 number, since 2×1312031300² = 3442852264359380000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11006 + ... + 52394.

Almost surely, 2^1312031300 is an apocalyptic number.

1312031300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312031300 is an abundant number, since it is smaller than the sum of its proper divisors (1544127040).

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

1312031300 is a wasteful number, since it uses less digits than its factorization.

1312031300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720 (or 41713 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1312031300 is about 36221.9726133186. The cubic root of 1312031300 is about 1094.7494405269.

Adding to 1312031300 its reverse (31302131), we get a palindrome (1343333431).

The spelling of 1312031300 in words is "one billion, three hundred twelve million, thirty-one thousand, three hundred".