315626629 has 2 divisors, whose sum is σ = 315626630. Its totient is φ = 315626628.

The previous prime is 315626581. The next prime is 315626653. The reversal of 315626629 is 926626513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239413729 + 76212900 = 15473^2 + 8730^2 .

It is an emirp because it is prime and its reverse (926626513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315626629 - 2⁹ = 315626117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315626591 and 315626600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315626329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157813314 + 157813315.

It is an arithmetic number, because the mean of its divisors is an integer number (157813315).

Almost surely, 2^315626629 is an apocalyptic number.

It is an amenable number.

315626629 is a deficient number, since it is larger than the sum of its proper divisors (1).

315626629 is an equidigital number, since it uses as much as digits as its factorization.

315626629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 315626629 is about 17765.8838507967. The cubic root of 315626629 is about 680.8600917372.

The spelling of 315626629 in words is "three hundred fifteen million, six hundred twenty-six thousand, six hundred twenty-nine".