1312622505 has 96 divisors (see below), whose sum is σ = 2500243200. Its totient is φ = 634507776.

The previous prime is 1312622497. The next prime is 1312622551. The reversal of 1312622505 is 5052262131.

It is a happy number.

1312622505 is a `hidden beast` number, since 1 + 31 + 2 + 622 + 5 + 0 + 5 = 666.

1312622505 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1312622505 - 2³ = 1312622497 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4140607 + ... + 4140923.

It is an arithmetic number, because the mean of its divisors is an integer number (26044200).

Almost surely, 2^1312622505 is an apocalyptic number.

1312622505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312622505 is a deficient number, since it is larger than the sum of its proper divisors (1187620695).

1312622505 is a wasteful number, since it uses less digits than its factorization.

1312622505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1312622505 is about 36230.1325556504. The cubic root of 1312622505 is about 1094.9138482292.

Adding to 1312622505 its reverse (5052262131), we get a palindrome (6364884636).

The spelling of 1312622505 in words is "one billion, three hundred twelve million, six hundred twenty-two thousand, five hundred five".