31413111000221 has 4 divisors (see below), whose sum is σ = 31422496456512. Its totient is φ = 31403725543932.

The previous prime is 31413111000181. The next prime is 31413111000287. The reversal of 31413111000221 is 12200011131413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31413111000221 - 2²⁶ = 31413043891357 is a prime.

It is a super-3 number, since 3×31413111000221³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31413111000193 and 31413111000202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31413111000721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4692723125 + ... + 4692729818.

It is an arithmetic number, because the mean of its divisors is an integer number (7855624114128).

Almost surely, 2^{31413111000221} is an apocalyptic number.

It is an amenable number.

31413111000221 is a deficient number, since it is larger than the sum of its proper divisors (9385456291).

31413111000221 is an equidigital number, since it uses as much as digits as its factorization.

31413111000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9385456290.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31413111000221 its reverse (12200011131413), we get a palindrome (43613122131634).

The spelling of 31413111000221 in words is "thirty-one trillion, four hundred thirteen billion, one hundred eleven million, two hundred twenty-one", and thus it is an aban number.