31312100202 has 32 divisors (see below), whose sum is σ = 63416715264. Its totient is φ = 10306110000.

The previous prime is 31312100147. The next prime is 31312100293. The reversal of 31312100202 is 20200121313.

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, 47827 + ... + 254777.

It is an arithmetic number, because the mean of its divisors is an integer number (1981772352).

Almost surely, 2^31312100202 is an apocalyptic number.

31312100202 is an abundant number, since it is smaller than the sum of its proper divisors (32104615062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31312100202 is a wasteful number, since it uses less digits than its factorization.

31312100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207274.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31312100202 its reverse (20200121313), we get a palindrome (51512221515).

The spelling of 31312100202 in words is "thirty-one billion, three hundred twelve million, one hundred thousand, two hundred two".