1312201012 has 24 divisors (see below), whose sum is σ = 2344115592. Its totient is φ = 642547200.

The previous prime is 1312201001. The next prime is 1312201013. The reversal of 1312201012 is 2101022131.

It can be written as a sum of positive squares in 4 ways, for example, as 7257636 + 1304943376 = 2694^2 + 36124^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1312200983 and 1312201001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312201013) 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, 45312 + ... + 68392.

It is an arithmetic number, because the mean of its divisors is an integer number (97671483).

Almost surely, 2^1312201012 is an apocalyptic number.

It is an amenable number.

1312201012 is a deficient number, since it is larger than the sum of its proper divisors (1031914580).

1312201012 is a wasteful number, since it uses less digits than its factorization.

1312201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23379 (or 23377 counting only the distinct ones).

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

The square root of 1312201012 is about 36224.3152040173. The cubic root of 1312201012 is about 1094.7966406475.

Adding to 1312201012 its reverse (2101022131), we get a palindrome (3413223143).

The spelling of 1312201012 in words is "one billion, three hundred twelve million, two hundred one thousand, twelve".