1312230240340 has 12 divisors (see below), whose sum is σ = 2755683504756. Its totient is φ = 524892096128.

The previous prime is 1312230240313. The next prime is 1312230240413. The reversal of 1312230240340 is 430420322131.

It can be written as a sum of positive squares in 2 ways, for example, as 520080399556 + 792149840784 = 721166^2 + 890028^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32805755989 + ... + 32805756028.

It is an arithmetic number, because the mean of its divisors is an integer number (229640292063).

Almost surely, 2^{1312230240340} is an apocalyptic number.

1312230240340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312230240340 is an abundant number, since it is smaller than the sum of its proper divisors (1443453264416).

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

1312230240340 is a wasteful number, since it uses less digits than its factorization.

1312230240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65611512026 (or 65611512024 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1312230240340 its reverse (430420322131), we get a palindrome (1742650562471).

The spelling of 1312230240340 in words is "one trillion, three hundred twelve billion, two hundred thirty million, two hundred forty thousand, three hundred forty".