31121232202 has 16 divisors (see below), whose sum is σ = 48299345640. Its totient is φ = 15021623232.

The previous prime is 31121232199. The next prime is 31121232239. The reversal of 31121232202 is 20223212113.

It can be written as a sum of positive squares in 4 ways, for example, as 27999663561 + 3121568641 = 167331^2 + 55871^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31121232202.

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 7 ways as a sum of consecutive naturals, for example, 350668 + ... + 430360.

Almost surely, 2^31121232202 is an apocalyptic number.

31121232202 is a deficient number, since it is larger than the sum of its proper divisors (17178113438).

31121232202 is a wasteful number, since it uses less digits than its factorization.

31121232202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86457.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31121232202 its reverse (20223212113), we get a palindrome (51344444315).

The spelling of 31121232202 in words is "thirty-one billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred two".