31034221243 has 4 divisors (see below), whose sum is σ = 31231891600. Its totient is φ = 30836550888.

The previous prime is 31034221223. The next prime is 31034221247. The reversal of 31034221243 is 34212243013.

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 31034221243 - 2⁹ = 31034220731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31034221247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98834943 + ... + 98835256.

It is an arithmetic number, because the mean of its divisors is an integer number (7807972900).

Almost surely, 2^31034221243 is an apocalyptic number.

31034221243 is a deficient number, since it is larger than the sum of its proper divisors (197670357).

31034221243 is a wasteful number, since it uses less digits than its factorization.

31034221243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197670356.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31034221243 its reverse (34212243013), we get a palindrome (65246464256).

The spelling of 31034221243 in words is "thirty-one billion, thirty-four million, two hundred twenty-one thousand, two hundred forty-three".