143431013 has 32 divisors (see below), whose sum is σ = 171383040. Its totient is φ = 118666240.

The previous prime is 143431003. The next prime is 143431033. The reversal of 143431013 is 310134341.

It is not a de Polignac number, because 143431013 - 2¹² = 143426917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143431003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 828995 + ... + 829167.

It is an arithmetic number, because the mean of its divisors is an integer number (5355720).

Almost surely, 2^143431013 is an apocalyptic number.

It is an amenable number.

143431013 is a deficient number, since it is larger than the sum of its proper divisors (27952027).

143431013 is a wasteful number, since it uses less digits than its factorization.

143431013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 143431013 is about 11976.2687428097. The cubic root of 143431013 is about 523.4570121183.

Adding to 143431013 its reverse (310134341), we get a palindrome (453565354).

The spelling of 143431013 in words is "one hundred forty-three million, four hundred thirty-one thousand, thirteen".