31224422032013 has 4 divisors (see below), whose sum is σ = 35685053750880. Its totient is φ = 26763790313148.

The previous prime is 31224422031973. The next prime is 31224422032021. The reversal of 31224422032013 is 31023022442213.

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 not a de Polignac number, because 31224422032013 - 2⁶ = 31224422031949 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 (31224422032093) 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, 2230315859423 + ... + 2230315859436.

It is an arithmetic number, because the mean of its divisors is an integer number (8921263437720).

Almost surely, 2^{31224422032013} is an apocalyptic number.

It is an amenable number.

31224422032013 is a deficient number, since it is larger than the sum of its proper divisors (4460631718867).

31224422032013 is an equidigital number, since it uses as much as digits as its factorization.

31224422032013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460631718866.

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

Adding to 31224422032013 its reverse (31023022442213), we get a palindrome (62247444474226).

The spelling of 31224422032013 in words is "thirty-one trillion, two hundred twenty-four billion, four hundred twenty-two million, thirty-two thousand, thirteen".