402133213 has 8 divisors (see below), whose sum is σ = 406193400. Its totient is φ = 398082048.

The previous prime is 402133201. The next prime is 402133243. The reversal of 402133213 is 312331204.

It can be written as a sum of positive squares in 4 ways, for example, as 10404 + 402122809 = 102^2 + 20053^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402133213 is a prime.

It is a super-2 number, since 2×402133213² = 323422241995406738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402133243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119133 + ... + 122461.

It is an arithmetic number, because the mean of its divisors is an integer number (50774175).

Almost surely, 2^402133213 is an apocalyptic number.

It is an amenable number.

402133213 is a deficient number, since it is larger than the sum of its proper divisors (4060187).

402133213 is a wasteful number, since it uses less digits than its factorization.

402133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 402133213 is about 20053.2594108788. The cubic root of 402133213 is about 738.1137821741.

Adding to 402133213 its reverse (312331204), we get a palindrome (714464417).

The spelling of 402133213 in words is "four hundred two million, one hundred thirty-three thousand, two hundred thirteen".