402623113 has 4 divisors (see below), whose sum is σ = 403013908. Its totient is φ = 402232320.

The previous prime is 402623107. The next prime is 402623141. The reversal of 402623113 is 311326204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 319229689 + 83393424 = 17867^2 + 9132^2 .

It is a cyclic number.

It is not a de Polignac number, because 402623113 - 2²⁵ = 369068681 is a prime.

It is a super-2 number, since 2×402623113² = 324210742243621538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402623183) 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, 193848 + ... + 195913.

It is an arithmetic number, because the mean of its divisors is an integer number (100753477).

Almost surely, 2^402623113 is an apocalyptic number.

It is an amenable number.

402623113 is a deficient number, since it is larger than the sum of its proper divisors (390795).

402623113 is a wasteful number, since it uses less digits than its factorization.

402623113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390794.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 402623113 is about 20065.4706648013. The cubic root of 402623113 is about 738.4133969855.

Adding to 402623113 its reverse (311326204), we get a palindrome (713949317).

The spelling of 402623113 in words is "four hundred two million, six hundred twenty-three thousand, one hundred thirteen".