1315620623 has 2 divisors, whose sum is σ = 1315620624. Its totient is φ = 1315620622.

The previous prime is 1315620619. The next prime is 1315620653. The reversal of 1315620623 is 3260265131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315620623 - 2² = 1315620619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315620613) 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 as a sum of consecutive naturals, namely, 657810311 + 657810312.

It is an arithmetic number, because the mean of its divisors is an integer number (657810312).

Almost surely, 2^1315620623 is an apocalyptic number.

1315620623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315620623 is an equidigital number, since it uses as much as digits as its factorization.

1315620623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1315620623 is about 36271.4849847645. The cubic root of 1315620623 is about 1095.7468332859.

Adding to 1315620623 its reverse (3260265131), we get a palindrome (4575885754).

The spelling of 1315620623 in words is "one billion, three hundred fifteen million, six hundred twenty thousand, six hundred twenty-three".