31504520245223 has 4 divisors (see below), whose sum is σ = 31504841395440. Its totient is φ = 31504199095008.

The previous prime is 31504520245201. The next prime is 31504520245273. The reversal of 31504520245223 is 32254202540513.

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 31504520245223 - 2¹⁶ = 31504520179687 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 (31504520245273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160427915 + ... + 160624172.

It is an arithmetic number, because the mean of its divisors is an integer number (7876210348860).

Almost surely, 2^{31504520245223} is an apocalyptic number.

31504520245223 is a deficient number, since it is larger than the sum of its proper divisors (321150217).

31504520245223 is an equidigital number, since it uses as much as digits as its factorization.

31504520245223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321150216.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 31504520245223 its reverse (32254202540513), we get a palindrome (63758722785736).

The spelling of 31504520245223 in words is "thirty-one trillion, five hundred four billion, five hundred twenty million, two hundred forty-five thousand, two hundred twenty-three".