402431242340343 has 4 divisors (see below), whose sum is σ = 536574989787128. Its totient is φ = 268287494893560.

The previous prime is 402431242340327. The next prime is 402431242340353. The reversal of 402431242340343 is 343043242134204.

It is a happy number.

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

It is not a de Polignac number, because 402431242340343 - 2⁴ = 402431242340327 is a prime.

It is a super-3 number, since 3×402431242340343³ (a number of 45 digits) contains 333 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 (402431242340353) 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, 67071873723388 + ... + 67071873723393.

It is an arithmetic number, because the mean of its divisors is an integer number (134143747446782).

Almost surely, 2^{402431242340343} is an apocalyptic number.

402431242340343 is a deficient number, since it is larger than the sum of its proper divisors (134143747446785).

402431242340343 is a wasteful number, since it uses less digits than its factorization.

402431242340343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134143747446784.

The product of its (nonzero) digits is 663552, while the sum is 39.

Adding to 402431242340343 its reverse (343043242134204), we get a palindrome (745474484474547).

The spelling of 402431242340343 in words is "four hundred two trillion, four hundred thirty-one billion, two hundred forty-two million, three hundred forty thousand, three hundred forty-three".