31130110142 has 4 divisors (see below), whose sum is σ = 46695165216. Its totient is φ = 15565055070.

The previous prime is 31130110111. The next prime is 31130110211. The reversal of 31130110142 is 24101103113.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31130110142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7782527534 + ... + 7782527537.

It is an arithmetic number, because the mean of its divisors is an integer number (11673791304).

Almost surely, 2^31130110142 is an apocalyptic number.

31130110142 is a deficient number, since it is larger than the sum of its proper divisors (15565055074).

31130110142 is a wasteful number, since it uses less digits than its factorization.

31130110142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15565055073.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31130110142 its reverse (24101103113), we get a palindrome (55231213255).

The spelling of 31130110142 in words is "thirty-one billion, one hundred thirty million, one hundred ten thousand, one hundred forty-two".