31420304502101 has 4 divisors (see below), whose sum is σ = 31420677231372. Its totient is φ = 31419931772832.

The previous prime is 31420304502091. The next prime is 31420304502113. The reversal of 31420304502101 is 10120540302413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22537341517201 + 8882962984900 = 4747351^2 + 2980430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31420304502101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31420304502131) 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, 186238160 + ... + 186406793.

It is an arithmetic number, because the mean of its divisors is an integer number (7855169307843).

Almost surely, 2^{31420304502101} is an apocalyptic number.

It is an amenable number.

31420304502101 is a deficient number, since it is larger than the sum of its proper divisors (372729271).

31420304502101 is an equidigital number, since it uses as much as digits as its factorization.

31420304502101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372729270.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 31420304502101 its reverse (10120540302413), we get a palindrome (41540844804514).

The spelling of 31420304502101 in words is "thirty-one trillion, four hundred twenty billion, three hundred four million, five hundred two thousand, one hundred one".