1312203023100 has 108 divisors (see below), whose sum is σ = 4116899741136. Its totient is φ = 349591368960.

The previous prime is 1312203023093. The next prime is 1312203023111. The reversal of 1312203023100 is 13203022131.

1312203023100 is a `hidden beast` number, since 1 + 31 + 2 + 20 + 302 + 310 + 0 = 666.

It is a super-2 number, since 2×1312203023100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 270904 + ... + 1642496.

Almost surely, 2^{1312203023100} is an apocalyptic number.

1312203023100 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 1312203023100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2058449870568).

1312203023100 is an abundant number, since it is smaller than the sum of its proper divisors (2804696718036).

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

1312203023100 is a wasteful number, since it uses less digits than its factorization.

1312203023100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372676 (or 1372666 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1312203023100 its reverse (13203022131), we get a palindrome (1325406045231).

The spelling of 1312203023100 in words is "one trillion, three hundred twelve billion, two hundred three million, twenty-three thousand, one hundred".