1312101405 has 12 divisors (see below), whose sum is σ = 2274309180. Its totient is φ = 699787392.

The previous prime is 1312101377. The next prime is 1312101407. The reversal of 1312101405 is 5041012131.

It can be written as a sum of positive squares in 2 ways, for example, as 481451364 + 830650041 = 21942^2 + 28821^2 .

It is not a de Polignac number, because 1312101405 - 2¹⁶ = 1312035869 is a prime.

It is a super-2 number, since 2×1312101405² = 3443220194005948050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312101407) 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, 14578860 + ... + 14578949.

It is an arithmetic number, because the mean of its divisors is an integer number (189525765).

Almost surely, 2^1312101405 is an apocalyptic number.

1312101405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312101405 is a deficient number, since it is larger than the sum of its proper divisors (962207775).

1312101405 is a wasteful number, since it uses less digits than its factorization.

1312101405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29157820 (or 29157817 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1312101405 is about 36222.9403141159. The cubic root of 1312101405 is about 1094.7689385482.

Adding to 1312101405 its reverse (5041012131), we get a palindrome (6353113536).

The spelling of 1312101405 in words is "one billion, three hundred twelve million, one hundred one thousand, four hundred five".