402323313 has 16 divisors (see below), whose sum is σ = 613846016. Its totient is φ = 229605840.

The previous prime is 402323303. The next prime is 402323321. The reversal of 402323313 is 313323204.

It is not a de Polignac number, because 402323313 - 2²² = 398129009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 402323313.

It is not an unprimeable number, because it can be changed into a prime (402323303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5220 + ... + 28842.

It is an arithmetic number, because the mean of its divisors is an integer number (38365376).

Almost surely, 2^402323313 is an apocalyptic number.

It is an amenable number.

402323313 is a deficient number, since it is larger than the sum of its proper divisors (211522703).

402323313 is a wasteful number, since it uses less digits than its factorization.

402323313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24444.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 402323313 is about 20057.9987286868. The cubic root of 402323313 is about 738.2300730953.

Adding to 402323313 its reverse (313323204), we get a palindrome (715646517).

The spelling of 402323313 in words is "four hundred two million, three hundred twenty-three thousand, three hundred thirteen".