31300034221 has 4 divisors (see below), whose sum is σ = 31304043072. Its totient is φ = 31296025372.

The previous prime is 31300034203. The next prime is 31300034281. The reversal of 31300034221 is 12243000313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12243000313 = 17 ⋅720176489.

It is a cyclic number.

It is not a de Polignac number, because 31300034221 - 2¹¹ = 31300032173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300034201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1992691 + ... + 2008336.

It is an arithmetic number, because the mean of its divisors is an integer number (7826010768).

Almost surely, 2^31300034221 is an apocalyptic number.

It is an amenable number.

31300034221 is a deficient number, since it is larger than the sum of its proper divisors (4008851).

31300034221 is an equidigital number, since it uses as much as digits as its factorization.

31300034221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008850.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31300034221 its reverse (12243000313), we get a palindrome (43543034534).

The spelling of 31300034221 in words is "thirty-one billion, three hundred million, thirty-four thousand, two hundred twenty-one".