31200242 has 16 divisors (see below), whose sum is σ = 49494240. Its totient is φ = 14709888.

The previous prime is 31200233. The next prime is 31200263. The reversal of 31200242 is 24200213.

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, 6818 + ... + 10434.

It is an arithmetic number, because the mean of its divisors is an integer number (3093390).

Almost surely, 2^31200242 is an apocalyptic number.

31200242 is a deficient number, since it is larger than the sum of its proper divisors (18293998).

31200242 is a wasteful number, since it uses less digits than its factorization.

31200242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 31200242 is about 5585.7176799405. The cubic root of 31200242 is about 314.8129972617.

Adding to 31200242 its reverse (24200213), we get a palindrome (55400455).

The spelling of 31200242 in words is "thirty-one million, two hundred thousand, two hundred forty-two".