31421411999 has 2 divisors, whose sum is σ = 31421412000. Its totient is φ = 31421411998.

The previous prime is 31421411993. The next prime is 31421412031. The reversal of 31421411999 is 99911412413.

It is a weak prime.

It is an emirp because it is prime and its reverse (99911412413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31421411999 - 2²⁰ = 31420363423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31421411993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15710705999 + 15710706000.

It is an arithmetic number, because the mean of its divisors is an integer number (15710706000).

Almost surely, 2^31421411999 is an apocalyptic number.

31421411999 is a deficient number, since it is larger than the sum of its proper divisors (1).

31421411999 is an equidigital number, since it uses as much as digits as its factorization.

31421411999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

It can be divided in two parts, 3142 and 1411999, that added together give a palindrome (1415141).

The spelling of 31421411999 in words is "thirty-one billion, four hundred twenty-one million, four hundred eleven thousand, nine hundred ninety-nine".