402311002 has 4 divisors (see below), whose sum is σ = 603466506. Its totient is φ = 201155500.

The previous prime is 402310991. The next prime is 402311011. The reversal of 402311002 is 200113204.

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

It can be written as a sum of positive squares in only one way, i.e., 255392361 + 146918641 = 15981^2 + 12121^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100577749 + ... + 100577752.

Almost surely, 2^402311002 is an apocalyptic number.

402311002 is a deficient number, since it is larger than the sum of its proper divisors (201155504).

402311002 is a wasteful number, since it uses less digits than its factorization.

402311002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201155503.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 402311002 is about 20057.6918412862. The cubic root of 402311002 is about 738.2225431289. Note that the first 3 decimals are identical.

Adding to 402311002 its reverse (200113204), we get a palindrome (602424206).

The spelling of 402311002 in words is "four hundred two million, three hundred eleven thousand, two".