31213234 has 8 divisors (see below), whose sum is σ = 50421420. Its totient is φ = 14406096.

The previous prime is 31213213. The next prime is 31213243. The reversal of 31213234 is 43231213.

It can be written as a sum of positive squares in 2 ways, for example, as 30305025 + 908209 = 5505^2 + 953^2 .

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

It is an unprimeable number.

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, 600229 + ... + 600280.

Almost surely, 2^31213234 is an apocalyptic number.

31213234 is a deficient number, since it is larger than the sum of its proper divisors (19208186).

31213234 is a wasteful number, since it uses less digits than its factorization.

31213234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200524.

The product of its digits is 432, while the sum is 19.

The square root of 31213234 is about 5586.8805249441. The cubic root of 31213234 is about 314.8566879792.

Adding to 31213234 its reverse (43231213), we get a palindrome (74444447).

The spelling of 31213234 in words is "thirty-one million, two hundred thirteen thousand, two hundred thirty-four".