31133332 has 12 divisors (see below), whose sum is σ = 55230196. Its totient is φ = 15353280.

The previous prime is 31133321. The next prime is 31133437. The reversal of 31133332 is 23333113.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 10666756 = 4524^2 + 3266^2 .

It is a super-2 number, since 2×31133332² = 1938568722844448, which contains 22 as substring.

It is a congruent number.

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, 53019 + ... + 53602.

Almost surely, 2^31133332 is an apocalyptic number.

It is an amenable number.

31133332 is a deficient number, since it is larger than the sum of its proper divisors (24096864).

31133332 is a wasteful number, since it uses less digits than its factorization.

31133332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106698 (or 106696 counting only the distinct ones).

The product of its digits is 486, while the sum is 19.

The square root of 31133332 is about 5579.7250828334. The cubic root of 31133332 is about 314.5877937392.

Adding to 31133332 its reverse (23333113), we get a palindrome (54466445).

The spelling of 31133332 in words is "thirty-one million, one hundred thirty-three thousand, three hundred thirty-two".