31210442142 has 64 divisors (see below), whose sum is σ = 68587803648. Its totient is φ = 9389520000.

The previous prime is 31210442129. The next prime is 31210442183. The reversal of 31210442142 is 24124401213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8372283 + ... + 8376009.

It is an arithmetic number, because the mean of its divisors is an integer number (1071684432).

Almost surely, 2^31210442142 is an apocalyptic number.

31210442142 is an abundant number, since it is smaller than the sum of its proper divisors (37377361506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31210442142 is a wasteful number, since it uses less digits than its factorization.

31210442142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31210442142 its reverse (24124401213), we get a palindrome (55334843355).

The spelling of 31210442142 in words is "thirty-one billion, two hundred ten million, four hundred forty-two thousand, one hundred forty-two".