31190229 has 48 divisors (see below), whose sum is σ = 55111680. Its totient is φ = 16601760.

The previous prime is 31190221. The next prime is 31190239. The reversal of 31190229 is 92209113.

It is not a de Polignac number, because 31190229 - 2³ = 31190221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31190221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84804 + ... + 85170.

It is an arithmetic number, because the mean of its divisors is an integer number (1148160).

Almost surely, 2^31190229 is an apocalyptic number.

It is an amenable number.

31190229 is a deficient number, since it is larger than the sum of its proper divisors (23921451).

31190229 is a wasteful number, since it uses less digits than its factorization.

31190229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 31190229 is about 5584.8213042138. The cubic root of 31190229 is about 314.7793163283.

The spelling of 31190229 in words is "thirty-one million, one hundred ninety thousand, two hundred twenty-nine".