31341433221 has 32 divisors (see below), whose sum is σ = 53098599680. Its totient is φ = 17898003648.

The previous prime is 31341433219. The next prime is 31341433229. The reversal of 31341433221 is 12233414313.

It is a happy number.

31341433221 is a `hidden beast` number, since 3 + 1 + 3 + 4 + 1 + 433 + 221 = 666.

It is not a de Polignac number, because 31341433221 - 2¹ = 31341433219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31341433229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249915 + ... + 353751.

It is an arithmetic number, because the mean of its divisors is an integer number (1659331240).

Almost surely, 2^31341433221 is an apocalyptic number.

It is an amenable number.

31341433221 is a deficient number, since it is larger than the sum of its proper divisors (21757166459).

31341433221 is a wasteful number, since it uses less digits than its factorization.

31341433221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105450 (or 105444 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 31341433221 its reverse (12233414313), we get a palindrome (43574847534).

The spelling of 31341433221 in words is "thirty-one billion, three hundred forty-one million, four hundred thirty-three thousand, two hundred twenty-one".