31340233 has 2 divisors, whose sum is σ = 31340234. Its totient is φ = 31340232.

The previous prime is 31340227. The next prime is 31340273. The reversal of 31340233 is 33204313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25130169 + 6210064 = 5013^2 + 2492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31340233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31340233.

It is not a weakly prime, because it can be changed into another prime (31340203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15670116 + 15670117.

It is an arithmetic number, because the mean of its divisors is an integer number (15670117).

Almost surely, 2^31340233 is an apocalyptic number.

It is an amenable number.

31340233 is a deficient number, since it is larger than the sum of its proper divisors (1).

31340233 is an equidigital number, since it uses as much as digits as its factorization.

31340233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 31340233 is about 5598.2348110811. The cubic root of 31340233 is about 315.2831350330.

Adding to 31340233 its reverse (33204313), we get a palindrome (64544546).

The spelling of 31340233 in words is "thirty-one million, three hundred forty thousand, two hundred thirty-three".