402230243431 has 4 divisors (see below), whose sum is σ = 402340841032. Its totient is φ = 402119645832.

The previous prime is 402230243399. The next prime is 402230243551. The reversal of 402230243431 is 134342032204.

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

It is a cyclic number.

It is not a de Polignac number, because 402230243431 - 2⁵ = 402230243399 is a prime.

It is a super-2 number, since 2×402230243431² (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 402230243431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402230247431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55293345 + ... + 55300618.

It is an arithmetic number, because the mean of its divisors is an integer number (100585210258).

Almost surely, 2^402230243431 is an apocalyptic number.

402230243431 is a deficient number, since it is larger than the sum of its proper divisors (110597601).

402230243431 is a wasteful number, since it uses less digits than its factorization.

402230243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110597600.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 402230243431 its reverse (134342032204), we get a palindrome (536572275635).

The spelling of 402230243431 in words is "four hundred two billion, two hundred thirty million, two hundred forty-three thousand, four hundred thirty-one".