31331122142 has 16 divisors (see below), whose sum is σ = 47652095760. Its totient is φ = 15447195072.

The previous prime is 31331122127. The next prime is 31331122201. The reversal of 31331122142 is 24122113313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630584 + ... + 678452.

It is an arithmetic number, because the mean of its divisors is an integer number (2978255985).

Almost surely, 2^31331122142 is an apocalyptic number.

31331122142 is a deficient number, since it is larger than the sum of its proper divisors (16320973618).

31331122142 is a wasteful number, since it uses less digits than its factorization.

31331122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52427.

The product of its digits is 864, while the sum is 23.

Adding to 31331122142 its reverse (24122113313), we get a palindrome (55453235455).

The spelling of 31331122142 in words is "thirty-one billion, three hundred thirty-one million, one hundred twenty-two thousand, one hundred forty-two".