31420421240202 has 24 divisors (see below), whose sum is σ = 68088561621600. Its totient is φ = 10471784167080.

The previous prime is 31420421240161. The next prime is 31420421240227. The reversal of 31420421240202 is 20204212402413.

It is a happy number.

31420421240202 is a `hidden beast` number, since 3 + 1 + 4 + 204 + 212 + 40 + 202 = 666.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 140683624 + ... + 140906787.

It is an arithmetic number, because the mean of its divisors is an integer number (2837023400900).

Almost surely, 2^{31420421240202} is an apocalyptic number.

31420421240202 is an abundant number, since it is smaller than the sum of its proper divisors (36668140381398).

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

31420421240202 is a wasteful number, since it uses less digits than its factorization.

31420421240202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281596618 (or 281596615 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 31420421240202 its reverse (20204212402413), we get a palindrome (51624633642615).

The spelling of 31420421240202 in words is "thirty-one trillion, four hundred twenty billion, four hundred twenty-one million, two hundred forty thousand, two hundred two".