213111312053 has 2 divisors, whose sum is σ = 213111312054. Its totient is φ = 213111312052.

The previous prime is 213111312049. The next prime is 213111312097. The reversal of 213111312053 is 350213111312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211782199204 + 1329112849 = 460198^2 + 36457^2 .

It is a cyclic number.

It is not a de Polignac number, because 213111312053 - 2² = 213111312049 is a prime.

It is a super-2 number, since 2×213111312053² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213111312653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555656026 + 106555656027.

It is an arithmetic number, because the mean of its divisors is an integer number (106555656027).

Almost surely, 2^213111312053 is an apocalyptic number.

It is an amenable number.

213111312053 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111312053 is an equidigital number, since it uses as much as digits as its factorization.

213111312053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 213111312053 its reverse (350213111312), we get a palindrome (563324423365).

The spelling of 213111312053 in words is "two hundred thirteen billion, one hundred eleven million, three hundred twelve thousand, fifty-three".