31142108 has 12 divisors (see below), whose sum is σ = 54557160. Its totient is φ = 15554352.

The previous prime is 31142101. The next prime is 31142117. The reversal of 31142108 is 80124113.

It is a self number, because there is not a number n which added to its sum of digits gives 31142108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635 + ... + 7917.

It is an arithmetic number, because the mean of its divisors is an integer number (4546430).

Almost surely, 2^31142108 is an apocalyptic number.

It is an amenable number.

31142108 is a deficient number, since it is larger than the sum of its proper divisors (23415052).

31142108 is a wasteful number, since it uses less digits than its factorization.

31142108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8356 (or 8354 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 31142108 is about 5580.5114460952. The cubic root of 31142108 is about 314.6173500906.

The spelling of 31142108 in words is "thirty-one million, one hundred forty-two thousand, one hundred eight".