31325230 has 16 divisors (see below), whose sum is σ = 57761424. Its totient is φ = 12224320.

The previous prime is 31325209. The next prime is 31325233. The reversal of 31325230 is 3252313.

It is a junction number, because it is equal to n+sod(n) for n = 31325198 and 31325207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31325233) by changing a digit.

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, 37792 + ... + 38611.

It is an arithmetic number, because the mean of its divisors is an integer number (3610089).

Almost surely, 2^31325230 is an apocalyptic number.

31325230 is a deficient number, since it is larger than the sum of its proper divisors (26436194).

31325230 is a wasteful number, since it uses less digits than its factorization.

31325230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76451.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 31325230 is about 5596.8946747281. The cubic root of 31325230 is about 315.2328168804.

Adding to 31325230 its reverse (3252313), we get a palindrome (34577543).

The spelling of 31325230 in words is "thirty-one million, three hundred twenty-five thousand, two hundred thirty".