31400222111 has 4 divisors (see below), whose sum is σ = 33052865400. Its totient is φ = 29747578824.

The previous prime is 31400222101. The next prime is 31400222123. The reversal of 31400222111 is 11122200413.

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

It is a cyclic number.

It is not a de Polignac number, because 31400222111 - 2⁶ = 31400222047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31400222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400222101) 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, 826321616 + ... + 826321653.

It is an arithmetic number, because the mean of its divisors is an integer number (8263216350).

Almost surely, 2^31400222111 is an apocalyptic number.

31400222111 is a deficient number, since it is larger than the sum of its proper divisors (1652643289).

31400222111 is a wasteful number, since it uses less digits than its factorization.

31400222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652643288.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31400222111 its reverse (11122200413), we get a palindrome (42522422524).

The spelling of 31400222111 in words is "thirty-one billion, four hundred million, two hundred twenty-two thousand, one hundred eleven".