31142102 has 16 divisors (see below), whose sum is σ = 49282560. Its totient is φ = 14718312.

The previous prime is 31142101. The next prime is 31142117. The reversal of 31142102 is 20124113.

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 7 ways as a sum of consecutive naturals, for example, 27683 + ... + 28785.

It is an arithmetic number, because the mean of its divisors is an integer number (3080160).

Almost surely, 2^31142102 is an apocalyptic number.

31142102 is a deficient number, since it is larger than the sum of its proper divisors (18140458).

31142102 is a wasteful number, since it uses less digits than its factorization.

31142102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 31142102 is about 5580.5109085101. The cubic root of 31142102 is about 314.6173298854.

Adding to 31142102 its reverse (20124113), we get a palindrome (51266215).

The spelling of 31142102 in words is "thirty-one million, one hundred forty-two thousand, one hundred two".