315020023 has 4 divisors (see below), whose sum is σ = 317424888. Its totient is φ = 312615160.

The previous prime is 315020003. The next prime is 315020033. The reversal of 315020023 is 320020513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320020513 = 4373 ⋅73181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315020023 is a prime.

It is a super-2 number, since 2×315020023² = 198475229781841058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315019979 and 315020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315020003) 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 in 3 ways as a sum of consecutive naturals, for example, 1202236 + ... + 1202497.

It is an arithmetic number, because the mean of its divisors is an integer number (79356222).

Almost surely, 2^315020023 is an apocalyptic number.

315020023 is a deficient number, since it is larger than the sum of its proper divisors (2404865).

315020023 is a wasteful number, since it uses less digits than its factorization.

315020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404864.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 315020023 is about 17748.8034244565. The cubic root of 315020023 is about 680.4236280451.

Adding to 315020023 its reverse (320020513), we get a palindrome (635040536).

The spelling of 315020023 in words is "three hundred fifteen million, twenty thousand, twenty-three".