405450031143 has 4 divisors (see below), whose sum is σ = 540600041528. Its totient is φ = 270300020760.

The previous prime is 405450031141. The next prime is 405450031157. The reversal of 405450031143 is 341130054504.

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

It is not a de Polignac number, because 405450031143 - 2¹ = 405450031141 is a prime.

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 405450031143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405450031141) 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, 67575005188 + ... + 67575005193.

It is an arithmetic number, because the mean of its divisors is an integer number (135150010382).

Almost surely, 2^405450031143 is an apocalyptic number.

405450031143 is a deficient number, since it is larger than the sum of its proper divisors (135150010385).

405450031143 is a wasteful number, since it uses less digits than its factorization.

405450031143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135150010384.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 405450031143 its reverse (341130054504), we get a palindrome (746580085647).

The spelling of 405450031143 in words is "four hundred five billion, four hundred fifty million, thirty-one thousand, one hundred forty-three".