402143431342323 has 16 divisors (see below), whose sum is σ = 599202629407872. Its totient is φ = 237778821192000.

The previous prime is 402143431342291. The next prime is 402143431342441. The reversal of 402143431342323 is 323243134341204.

It is not a de Polignac number, because 402143431342323 - 2⁵ = 402143431342291 is a prime.

It is a super-2 number, since 2×402143431342323² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402143431342823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148611761893 + ... + 148611764598.

It is an arithmetic number, because the mean of its divisors is an integer number (37450164337992).

Almost surely, 2^{402143431342323} is an apocalyptic number.

402143431342323 is a deficient number, since it is larger than the sum of its proper divisors (197059198065549).

402143431342323 is a wasteful number, since it uses less digits than its factorization.

402143431342323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297223526546.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 402143431342323 its reverse (323243134341204), we get a palindrome (725386565683527).

The spelling of 402143431342323 in words is "four hundred two trillion, one hundred forty-three billion, four hundred thirty-one million, three hundred forty-two thousand, three hundred twenty-three".