1262313561 has 16 divisors (see below), whose sum is σ = 1730890944. Its totient is φ = 817936704.

The previous prime is 1262313509. The next prime is 1262313581. The reversal of 1262313561 is 1653132621.

It is not a de Polignac number, because 1262313561 - 2¹⁰ = 1262312537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1262313581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20086 + ... + 54111.

It is an arithmetic number, because the mean of its divisors is an integer number (108180684).

Almost surely, 2^1262313561 is an apocalyptic number.

It is an amenable number.

1262313561 is a deficient number, since it is larger than the sum of its proper divisors (468577383).

1262313561 is a wasteful number, since it uses less digits than its factorization.

1262313561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74360.

The product of its digits is 6480, while the sum is 30.

The square root of 1262313561 is about 35529.0523515615. The cubic root of 1262313561 is about 1080.7429618584.

The spelling of 1262313561 in words is "one billion, two hundred sixty-two million, three hundred thirteen thousand, five hundred sixty-one".