1312012020100 has 36 divisors (see below), whose sum is σ = 2853828802468. Its totient is φ = 523558224000.

The previous prime is 1312012020083. The next prime is 1312012020103. The reversal of 1312012020100 is 10202102131.

It can be written as a sum of positive squares in 6 ways, for example, as 134348639296 + 1177663380804 = 366536^2 + 1085202^2 .

It is a super-3 number, since 3×1312012020100³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312012020103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15539991 + ... + 15624190.

Almost surely, 2^{1312012020100} is an apocalyptic number.

1312012020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312012020100 is an abundant number, since it is smaller than the sum of its proper divisors (1541816782368).

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

1312012020100 is a wasteful number, since it uses less digits than its factorization.

1312012020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31164616 (or 31164609 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1312012020100 its reverse (10202102131), we get a palindrome (1322214122231).

The spelling of 1312012020100 in words is "one trillion, three hundred twelve billion, twelve million, twenty thousand, one hundred".