31109234 has 8 divisors (see below), whose sum is σ = 50253420. Its totient is φ = 14358096.

The previous prime is 31109233. The next prime is 31109237. The reversal of 31109234 is 43290113.

It can be written as a sum of positive squares in 2 ways, for example, as 29539225 + 1570009 = 5435^2 + 1253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31109233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598229 + ... + 598280.

Almost surely, 2^31109234 is an apocalyptic number.

31109234 is a deficient number, since it is larger than the sum of its proper divisors (19144186).

31109234 is a wasteful number, since it uses less digits than its factorization.

31109234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196524.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 31109234 is about 5577.5652394212. The cubic root of 31109234 is about 314.5066064397.

Adding to 31109234 its reverse (43290113), we get a palindrome (74399347).

The spelling of 31109234 in words is "thirty-one million, one hundred nine thousand, two hundred thirty-four".