31114221 has 8 divisors (see below), whose sum is σ = 41539104. Its totient is φ = 20716080.

The previous prime is 31114189. The next prime is 31114249. The reversal of 31114221 is 12241113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31114221 - 2⁵ = 31114189 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31114221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31114621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3790 + ... + 8751.

It is an arithmetic number, because the mean of its divisors is an integer number (5192388).

Almost surely, 2^31114221 is an apocalyptic number.

It is an amenable number.

31114221 is a deficient number, since it is larger than the sum of its proper divisors (10424883).

31114221 is a wasteful number, since it uses less digits than its factorization.

31114221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13371.

The product of its digits is 48, while the sum is 15.

The square root of 31114221 is about 5578.0122803737. The cubic root of 31114221 is about 314.5234113177.

Adding to 31114221 its reverse (12241113), we get a palindrome (43355334).

The spelling of 31114221 in words is "thirty-one million, one hundred fourteen thousand, two hundred twenty-one".