313440023 has 4 divisors (see below), whose sum is σ = 337550808. Its totient is φ = 289329240.

The previous prime is 313439989. The next prime is 313440031. The reversal of 313440023 is 320044313.

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

It is a cyclic number.

It is not a de Polignac number, because 313440023 - 2¹⁶ = 313374487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313439977 and 313440004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313410023) 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, 12055373 + ... + 12055398.

It is an arithmetic number, because the mean of its divisors is an integer number (84387702).

Almost surely, 2^313440023 is an apocalyptic number.

313440023 is a deficient number, since it is larger than the sum of its proper divisors (24110785).

313440023 is a wasteful number, since it uses less digits than its factorization.

313440023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24110784.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 313440023 is about 17704.2374306266. The cubic root of 313440023 is about 679.2841536891.

Adding to 313440023 its reverse (320044313), we get a palindrome (633484336).

The spelling of 313440023 in words is "three hundred thirteen million, four hundred forty thousand, twenty-three".