613431143 has 4 divisors (see below), whose sum is σ = 660618168. Its totient is φ = 566244120.

The previous prime is 613431139. The next prime is 613431157. The reversal of 613431143 is 341134316.

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

It is not a de Polignac number, because 613431143 - 2² = 613431139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613431443) 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, 23593493 + ... + 23593518.

It is an arithmetic number, because the mean of its divisors is an integer number (165154542).

Almost surely, 2^613431143 is an apocalyptic number.

613431143 is a deficient number, since it is larger than the sum of its proper divisors (47187025).

613431143 is a wasteful number, since it uses less digits than its factorization.

613431143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47187024.

The product of its digits is 2592, while the sum is 26.

The square root of 613431143 is about 24767.5421267432. The cubic root of 613431143 is about 849.6797607946.

Adding to 613431143 its reverse (341134316), we get a palindrome (954565459).

The spelling of 613431143 in words is "six hundred thirteen million, four hundred thirty-one thousand, one hundred forty-three".