31143003242 has 16 divisors (see below), whose sum is σ = 50311552032. Its totient is φ = 14372658480.

The previous prime is 31143003139. The next prime is 31143003247. The reversal of 31143003242 is 24230034113.

It is not an unprimeable number, because it can be changed into a prime (31143003247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417617 + ... + 486507.

It is an arithmetic number, because the mean of its divisors is an integer number (3144472002).

Almost surely, 2^31143003242 is an apocalyptic number.

31143003242 is a deficient number, since it is larger than the sum of its proper divisors (19168548790).

31143003242 is a wasteful number, since it uses less digits than its factorization.

31143003242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86293.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31143003242 its reverse (24230034113), we get a palindrome (55373037355).

The spelling of 31143003242 in words is "thirty-one billion, one hundred forty-three million, three thousand, two hundred forty-two".