1312202405 has 16 divisors (see below), whose sum is σ = 1620622080. Its totient is φ = 1019393088.

The previous prime is 1312202401. The next prime is 1312202407. The reversal of 1312202405 is 5042022131.

It is not a de Polignac number, because 1312202405 - 2² = 1312202401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312202401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19556 + ... + 54834.

It is an arithmetic number, because the mean of its divisors is an integer number (101288880).

Almost surely, 2^1312202405 is an apocalyptic number.

It is an amenable number.

1312202405 is a deficient number, since it is larger than the sum of its proper divisors (308419675).

1312202405 is a wasteful number, since it uses less digits than its factorization.

1312202405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35500.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1312202405 is about 36224.3344314288. The cubic root of 1312202405 is about 1094.7970280503.

Adding to 1312202405 its reverse (5042022131), we get a palindrome (6354224536).

The spelling of 1312202405 in words is "one billion, three hundred twelve million, two hundred two thousand, four hundred five".