31504222012 has 48 divisors (see below), whose sum is σ = 59624893440. Its totient is φ = 14517807552.

The previous prime is 31504221979. The next prime is 31504222063. The reversal of 31504222012 is 21022240513.

It is a happy number.

It is a super-3 number, since 3×31504222012³ (a number of 32 digits) contains 333 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570118 + ... + 622930.

It is an arithmetic number, because the mean of its divisors is an integer number (1242185280).

Almost surely, 2^31504222012 is an apocalyptic number.

It is an amenable number.

31504222012 is a deficient number, since it is larger than the sum of its proper divisors (28120671428).

31504222012 is a wasteful number, since it uses less digits than its factorization.

31504222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53050 (or 53048 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 31504222012 its reverse (21022240513), we get a palindrome (52526462525).

The spelling of 31504222012 in words is "thirty-one billion, five hundred four million, two hundred twenty-two thousand, twelve".