31553000213 has 4 divisors (see below), whose sum is σ = 36060571680. Its totient is φ = 27045428748.

The previous prime is 31553000201. The next prime is 31553000233. The reversal of 31553000213 is 31200035513.

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: 31200035513 = 4363 ⋅7151051.

It is a cyclic number.

It is not a de Polignac number, because 31553000213 - 2¹² = 31552996117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31553000233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253785723 + ... + 2253785736.

It is an arithmetic number, because the mean of its divisors is an integer number (9015142920).

Almost surely, 2^31553000213 is an apocalyptic number.

It is an amenable number.

31553000213 is a deficient number, since it is larger than the sum of its proper divisors (4507571467).

31553000213 is an equidigital number, since it uses as much as digits as its factorization.

31553000213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4507571466.

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 31553000213 its reverse (31200035513), we get a palindrome (62753035726).

The spelling of 31553000213 in words is "thirty-one billion, five hundred fifty-three million, two hundred thirteen", and thus it is an aban number.