31243034 has 16 divisors (see below), whose sum is σ = 48663720. Its totient is φ = 15025920.

The previous prime is 31243013. The next prime is 31243061. The reversal of 31243034 is 43034213.

It can be written as a sum of positive squares in 4 ways, for example, as 21022225 + 10220809 = 4585^2 + 3197^2 .

It is a super-2 number, since 2×31243034² = 1952254347050312, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31242997 and 31243015.

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, 17294 + ... + 19014.

Almost surely, 2^31243034 is an apocalyptic number.

31243034 is a deficient number, since it is larger than the sum of its proper divisors (17420686).

31243034 is a wasteful number, since it uses less digits than its factorization.

31243034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 31243034 is about 5589.5468510426. The cubic root of 31243034 is about 314.9568564410.

Adding to 31243034 its reverse (43034213), we get a palindrome (74277247).

The spelling of 31243034 in words is "thirty-one million, two hundred forty-three thousand, thirty-four".