1312203232144 has 40 divisors (see below), whose sum is σ = 2946516732288. Its totient is φ = 554452066560.

The previous prime is 1312203232141. The next prime is 1312203232147. The reversal of 1312203232144 is 4412323022131.

It is an interprime number because it is at equal distance from previous prime (1312203232141) and next prime (1312203232147).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1312203232141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82499797 + ... + 82515700.

Almost surely, 2^{1312203232144} is an apocalyptic number.

1312203232144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1312203232144 is an abundant number, since it is smaller than the sum of its proper divisors (1634313500144).

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

1312203232144 is a wasteful number, since it uses less digits than its factorization.

1312203232144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165015583 (or 165015577 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1312203232144 its reverse (4412323022131), we get a palindrome (5724526254275).

The spelling of 1312203232144 in words is "one trillion, three hundred twelve billion, two hundred three million, two hundred thirty-two thousand, one hundred forty-four".