31112404142 has 4 divisors (see below), whose sum is σ = 46668606216. Its totient is φ = 15556202070.

The previous prime is 31112404139. The next prime is 31112404153. The reversal of 31112404142 is 24140421113.

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

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, 7778101034 + ... + 7778101037.

It is an arithmetic number, because the mean of its divisors is an integer number (11667151554).

Almost surely, 2^31112404142 is an apocalyptic number.

31112404142 is a deficient number, since it is larger than the sum of its proper divisors (15556202074).

31112404142 is a wasteful number, since it uses less digits than its factorization.

31112404142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15556202073.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 31112404142 its reverse (24140421113), we get a palindrome (55252825255).

The spelling of 31112404142 in words is "thirty-one billion, one hundred twelve million, four hundred four thousand, one hundred forty-two".