31202131142 has 32 divisors (see below), whose sum is σ = 58393054272. Its totient is φ = 12174603264.

The previous prime is 31202131111. The next prime is 31202131187. The reversal of 31202131142 is 24113120213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1160963 + ... + 1187534.

It is an arithmetic number, because the mean of its divisors is an integer number (1824782946).

Almost surely, 2^31202131142 is an apocalyptic number.

31202131142 is a deficient number, since it is larger than the sum of its proper divisors (27190923130).

31202131142 is a wasteful number, since it uses less digits than its factorization.

31202131142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348592.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31202131142 its reverse (24113120213), we get a palindrome (55315251355).

The spelling of 31202131142 in words is "thirty-one billion, two hundred two million, one hundred thirty-one thousand, one hundred forty-two".