1316213405 has 12 divisors (see below), whose sum is σ = 1710299700. Its totient is φ = 971972352.

The previous prime is 1316213377. The next prime is 1316213411. The reversal of 1316213405 is 5043126131.

It can be written as a sum of positive squares in 6 ways, for example, as 152448409 + 1163764996 = 12347^2 + 34114^2 .

It is not a de Polignac number, because 1316213405 - 2¹⁴ = 1316197021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 777980 + ... + 779669.

It is an arithmetic number, because the mean of its divisors is an integer number (142524975).

Almost surely, 2^1316213405 is an apocalyptic number.

It is an amenable number.

1316213405 is a deficient number, since it is larger than the sum of its proper divisors (394086295).

1316213405 is a wasteful number, since it uses less digits than its factorization.

1316213405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557680 (or 1557667 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1316213405 is about 36279.6555248255. The cubic root of 1316213405 is about 1095.9113795737.

Adding to 1316213405 its reverse (5043126131), we get a palindrome (6359339536).

The spelling of 1316213405 in words is "one billion, three hundred sixteen million, two hundred thirteen thousand, four hundred five".