315101023 has 4 divisors (see below), whose sum is σ = 316477240. Its totient is φ = 313724808.

The previous prime is 315101011. The next prime is 315101057. The reversal of 315101023 is 320101513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315101023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315100988 and 315101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315101623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687765 + ... + 688222.

It is an arithmetic number, because the mean of its divisors is an integer number (79119310).

Almost surely, 2^315101023 is an apocalyptic number.

315101023 is a deficient number, since it is larger than the sum of its proper divisors (1376217).

315101023 is a wasteful number, since it uses less digits than its factorization.

315101023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376216.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 315101023 is about 17751.0851217609. The cubic root of 315101023 is about 680.4819413656.

Adding to 315101023 its reverse (320101513), we get a palindrome (635202536).

The spelling of 315101023 in words is "three hundred fifteen million, one hundred one thousand, twenty-three".