402443030231 has 16 divisors (see below), whose sum is σ = 446564517120. Its totient is φ = 359580131520.

The previous prime is 402443030177. The next prime is 402443030239. The reversal of 402443030231 is 132030344204.

It is a cyclic number.

It is not a de Polignac number, because 402443030231 - 2⁶ = 402443030167 is a prime.

It is a super-2 number, since 2×402443030231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402443030231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402443030239) 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, 3118811 + ... + 3245283.

It is an arithmetic number, because the mean of its divisors is an integer number (27910282320).

Almost surely, 2^402443030231 is an apocalyptic number.

402443030231 is a deficient number, since it is larger than the sum of its proper divisors (44121486889).

402443030231 is a wasteful number, since it uses less digits than its factorization.

402443030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131446.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 402443030231 its reverse (132030344204), we get a palindrome (534473374435).

The spelling of 402443030231 in words is "four hundred two billion, four hundred forty-three million, thirty thousand, two hundred thirty-one".