213789013 has 2 divisors, whose sum is σ = 213789014. Its totient is φ = 213789012.

The previous prime is 213788983. The next prime is 213789019. The reversal of 213789013 is 310987312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162766564 + 51022449 = 12758^2 + 7143^2 .

It is a cyclic number.

It is not a de Polignac number, because 213789013 - 2⁹ = 213788501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213789013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213789019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106894506 + 106894507.

It is an arithmetic number, because the mean of its divisors is an integer number (106894507).

Almost surely, 2^213789013 is an apocalyptic number.

It is an amenable number.

213789013 is a deficient number, since it is larger than the sum of its proper divisors (1).

213789013 is an equidigital number, since it uses as much as digits as its factorization.

213789013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 213789013 is about 14621.5256727880. The cubic root of 213789013 is about 597.9457647036.

The spelling of 213789013 in words is "two hundred thirteen million, seven hundred eighty-nine thousand, thirteen".