31043420222 has 4 divisors (see below), whose sum is σ = 46565130336. Its totient is φ = 15521710110.

The previous prime is 31043420203. The next prime is 31043420227. The reversal of 31043420222 is 22202434013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22202434013 = 4931 ⋅4502623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31043420227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7760855054 + ... + 7760855057.

It is an arithmetic number, because the mean of its divisors is an integer number (11641282584).

Almost surely, 2^31043420222 is an apocalyptic number.

31043420222 is a deficient number, since it is larger than the sum of its proper divisors (15521710114).

31043420222 is a wasteful number, since it uses less digits than its factorization.

31043420222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15521710113.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 31043420222 its reverse (22202434013), we get a palindrome (53245854235).

The spelling of 31043420222 in words is "thirty-one billion, forty-three million, four hundred twenty thousand, two hundred twenty-two".