31054051213 has 4 divisors (see below), whose sum is σ = 31491432288. Its totient is φ = 30616670140.

The previous prime is 31054051211. The next prime is 31054051219. The reversal of 31054051213 is 31215045013.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31215045013 = 2417 ⋅12914789.

It is a cyclic number.

It is not a de Polignac number, because 31054051213 - 2¹ = 31054051211 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 (31054051211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218690431 + ... + 218690572.

It is an arithmetic number, because the mean of its divisors is an integer number (7872858072).

Almost surely, 2^31054051213 is an apocalyptic number.

It is an amenable number.

31054051213 is a deficient number, since it is larger than the sum of its proper divisors (437381075).

31054051213 is an equidigital number, since it uses as much as digits as its factorization.

31054051213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437381074.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 31054051213 its reverse (31215045013), we get a palindrome (62269096226).

The spelling of 31054051213 in words is "thirty-one billion, fifty-four million, fifty-one thousand, two hundred thirteen".