402231413 has 4 divisors (see below), whose sum is σ = 404453868. Its totient is φ = 400008960.

The previous prime is 402231397. The next prime is 402231419. The reversal of 402231413 is 314132204.

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 71791729 + 330439684 = 8473^2 + 18178^2 .

It is a cyclic number.

It is not a de Polignac number, because 402231413 - 2⁴ = 402231397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402231419) 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, 1110956 + ... + 1111317.

It is an arithmetic number, because the mean of its divisors is an integer number (101113467).

Almost surely, 2^402231413 is an apocalyptic number.

It is an amenable number.

402231413 is a deficient number, since it is larger than the sum of its proper divisors (2222455).

402231413 is a wasteful number, since it uses less digits than its factorization.

402231413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222454.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 402231413 is about 20055.7077411893. The cubic root of 402231413 is about 738.1738591766.

Adding to 402231413 its reverse (314132204), we get a palindrome (716363617).

The spelling of 402231413 in words is "four hundred two million, two hundred thirty-one thousand, four hundred thirteen".