213376837 has 2 divisors, whose sum is σ = 213376838. Its totient is φ = 213376836.

The previous prime is 213376831. The next prime is 213376847. The reversal of 213376837 is 738673312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108805761 + 104571076 = 10431^2 + 10226^2 .

It is a cyclic number.

It is not a de Polignac number, because 213376837 - 2¹¹ = 213374789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213376837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213376831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106688418 + 106688419.

It is an arithmetic number, because the mean of its divisors is an integer number (106688419).

Almost surely, 2^213376837 is an apocalyptic number.

It is an amenable number.

213376837 is a deficient number, since it is larger than the sum of its proper divisors (1).

213376837 is an equidigital number, since it uses as much as digits as its factorization.

213376837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The square root of 213376837 is about 14607.4240371121. The cubic root of 213376837 is about 597.5612462676.

The spelling of 213376837 in words is "two hundred thirteen million, three hundred seventy-six thousand, eight hundred thirty-seven".