31340330 has 32 divisors (see below), whose sum is σ = 64955520. Its totient is φ = 10664640.

The previous prime is 31340317. The next prime is 31340381. The reversal of 31340330 is 3304313.

It is a junction number, because it is equal to n+sod(n) for n = 31340299 and 31340308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8120 + ... + 11340.

It is an arithmetic number, because the mean of its divisors is an integer number (2029860).

Almost surely, 2^31340330 is an apocalyptic number.

31340330 is an abundant number, since it is smaller than the sum of its proper divisors (33615190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31340330 is a wasteful number, since it uses less digits than its factorization.

31340330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 31340330 is about 5598.2434745195. The cubic root of 31340330 is about 315.2834603064.

Adding to 31340330 its reverse (3304313), we get a palindrome (34644643).

The spelling of 31340330 in words is "thirty-one million, three hundred forty thousand, three hundred thirty".