31702142 has 16 divisors (see below), whose sum is σ = 49768992. Its totient is φ = 15116640.

The previous prime is 31702129. The next prime is 31702157. The reversal of 31702142 is 24120713.

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 7 ways as a sum of consecutive naturals, for example, 18548 + ... + 20184.

It is an arithmetic number, because the mean of its divisors is an integer number (3110562).

Almost surely, 2^31702142 is an apocalyptic number.

31702142 is a deficient number, since it is larger than the sum of its proper divisors (18066850).

31702142 is a wasteful number, since it uses less digits than its factorization.

31702142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 31702142 is about 5630.4655224946. The cubic root of 31702142 is about 316.4920963330.

Adding to 31702142 its reverse (24120713), we get a palindrome (55822855).

The spelling of 31702142 in words is "thirty-one million, seven hundred two thousand, one hundred forty-two".