31321131202 has 8 divisors (see below), whose sum is σ = 47075850000. Its totient is φ = 15629181204.

The previous prime is 31321131161. The next prime is 31321131223. The reversal of 31321131202 is 20213112313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31321131202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15690952 + ... + 15692947.

It is an arithmetic number, because the mean of its divisors is an integer number (5884481250).

Almost surely, 2^31321131202 is an apocalyptic number.

31321131202 is a deficient number, since it is larger than the sum of its proper divisors (15754718798).

31321131202 is a wasteful number, since it uses less digits than its factorization.

31321131202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31384400.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31321131202 its reverse (20213112313), we get a palindrome (51534243515).

The spelling of 31321131202 in words is "thirty-one billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred two".