315510023 has 2 divisors, whose sum is σ = 315510024. Its totient is φ = 315510022.

The previous prime is 315510001. The next prime is 315510043. The reversal of 315510023 is 320015513.

It is an a-pointer prime, because the next prime (315510043) can be obtained adding 315510023 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315510023 - 2⁶ = 315509959 is a prime.

It is a super-2 number, since 2×315510023² = 199093149226921058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315509977 and 315510004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315510043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157755011 + 157755012.

It is an arithmetic number, because the mean of its divisors is an integer number (157755012).

Almost surely, 2^315510023 is an apocalyptic number.

315510023 is a deficient number, since it is larger than the sum of its proper divisors (1).

315510023 is an equidigital number, since it uses as much as digits as its factorization.

315510023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 315510023 is about 17762.6018082937. The cubic root of 315510023 is about 680.7762351130.

Adding to 315510023 its reverse (320015513), we get a palindrome (635525536).

The spelling of 315510023 in words is "three hundred fifteen million, five hundred ten thousand, twenty-three".