213034133491 has 2 divisors, whose sum is σ = 213034133492. Its totient is φ = 213034133490.

The previous prime is 213034133437. The next prime is 213034133519. The reversal of 213034133491 is 194331430312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213034133491 - 2³¹ = 210886649843 is a prime.

It is a super-2 number, since 2×213034133491² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213034134491) 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 as a sum of consecutive naturals, namely, 106517066745 + 106517066746.

It is an arithmetic number, because the mean of its divisors is an integer number (106517066746).

Almost surely, 2^213034133491 is an apocalyptic number.

213034133491 is a deficient number, since it is larger than the sum of its proper divisors (1).

213034133491 is an equidigital number, since it uses as much as digits as its factorization.

213034133491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 213034133491 in words is "two hundred thirteen billion, thirty-four million, one hundred thirty-three thousand, four hundred ninety-one".