31300142 has 16 divisors (see below), whose sum is σ = 48771072. Its totient is φ = 15049560.

The previous prime is 31300141. The next prime is 31300151. The reversal of 31300142 is 24100313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300141) 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, 8843 + ... + 11865.

It is an arithmetic number, because the mean of its divisors is an integer number (3048192).

Almost surely, 2^31300142 is an apocalyptic number.

31300142 is a deficient number, since it is larger than the sum of its proper divisors (17470930).

31300142 is a wasteful number, since it uses less digits than its factorization.

31300142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31300142 is about 5594.6529829829. The cubic root of 31300142 is about 315.1486390134.

Adding to 31300142 its reverse (24100313), we get a palindrome (55400455).

The spelling of 31300142 in words is "thirty-one million, three hundred thousand, one hundred forty-two".