315535123 has 2 divisors, whose sum is σ = 315535124. Its totient is φ = 315535122.

The previous prime is 315535067. The next prime is 315535133. The reversal of 315535123 is 321535513.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315535123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315535091 and 315535100.

It is not a weakly prime, because it can be changed into another prime (315535133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157767561 + 157767562.

It is an arithmetic number, because the mean of its divisors is an integer number (157767562).

Almost surely, 2^315535123 is an apocalyptic number.

315535123 is a deficient number, since it is larger than the sum of its proper divisors (1).

315535123 is an equidigital number, since it uses as much as digits as its factorization.

315535123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6750, while the sum is 28.

The square root of 315535123 is about 17763.3083348795. The cubic root of 315535123 is about 680.7942873978.

The spelling of 315535123 in words is "three hundred fifteen million, five hundred thirty-five thousand, one hundred twenty-three".