31012211112202 has 8 divisors (see below), whose sum is σ = 46519094784996. Its totient is φ = 15505846183872.

The previous prime is 31012211112167. The next prime is 31012211112209. The reversal of 31012211112202 is 20221111221013.

It can be written as a sum of positive squares in 2 ways, for example, as 29495424278961 + 1516786833241 = 5430969^2 + 1231579^2 .

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 31012211112202.

It is not an unprimeable number, because it can be changed into a prime (31012211112209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129536623 + ... + 129775810.

Almost surely, 2^{31012211112202} is an apocalyptic number.

31012211112202 is a deficient number, since it is larger than the sum of its proper divisors (15506883672794).

31012211112202 is a wasteful number, since it uses less digits than its factorization.

31012211112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259372232.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 31012211112202 its reverse (20221111221013), we get a palindrome (51233322333215).

The spelling of 31012211112202 in words is "thirty-one trillion, twelve billion, two hundred eleven million, one hundred twelve thousand, two hundred two".