31034344421 has 4 divisors (see below), whose sum is σ = 31040881344. Its totient is φ = 31027807500.

The previous prime is 31034344409. The next prime is 31034344423. The reversal of 31034344421 is 12444343013.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 31034344421 - 2³⁰ = 29960602597 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 (31034344423) 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, 3261335 + ... + 3270836.

It is an arithmetic number, because the mean of its divisors is an integer number (7760220336).

Almost surely, 2^31034344421 is an apocalyptic number.

It is an amenable number.

31034344421 is a deficient number, since it is larger than the sum of its proper divisors (6536923).

31034344421 is an equidigital number, since it uses as much as digits as its factorization.

31034344421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536922.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31034344421 its reverse (12444343013), we get a palindrome (43478687434).

The spelling of 31034344421 in words is "thirty-one billion, thirty-four million, three hundred forty-four thousand, four hundred twenty-one".