31252025213 has 4 divisors (see below), whose sum is σ = 31299449280. Its totient is φ = 31204601148.

The previous prime is 31252025177. The next prime is 31252025243.

It is a happy number.

31252025213 is nontrivially palindromic in base 10.

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 31252025213 - 2⁶ = 31252025149 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 (31252025243) 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, 23711045 + ... + 23712362.

It is an arithmetic number, because the mean of its divisors is an integer number (7824862320).

Almost surely, 2^31252025213 is an apocalyptic number.

It is an amenable number.

31252025213 is a deficient number, since it is larger than the sum of its proper divisors (47424067).

31252025213 is an equidigital number, since it uses as much as digits as its factorization.

31252025213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47424066.

The product of its (nonzero) digits is 3600, while the sum is 26.

It can be divided in two parts, 312520 and 25213, that added together give a palindrome (337733).

The spelling of 31252025213 in words is "thirty-one billion, two hundred fifty-two million, twenty-five thousand, two hundred thirteen".