31304146 has 16 divisors (see below), whose sum is σ = 48680280. Its totient is φ = 15085440.

The previous prime is 31304107. The next prime is 31304159. The reversal of 31304146 is 64140313.

It can be written as a sum of positive squares in 4 ways, for example, as 31304025 + 121 = 5595^2 + 11^2 .

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, 6126 + ... + 10006.

Almost surely, 2^31304146 is an apocalyptic number.

31304146 is a deficient number, since it is larger than the sum of its proper divisors (17376134).

31304146 is a wasteful number, since it uses less digits than its factorization.

31304146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 31304146 is about 5595.0108132156. The cubic root of 31304146 is about 315.1620766664.

Adding to 31304146 its reverse (64140313), we get a palindrome (95444459).

The spelling of 31304146 in words is "thirty-one million, three hundred four thousand, one hundred forty-six".