213031069 has 2 divisors, whose sum is σ = 213031070. Its totient is φ = 213031068.

The previous prime is 213031043. The next prime is 213031153. The reversal of 213031069 is 960130312.

213031069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141848100 + 71182969 = 11910^2 + 8437^2 .

It is a cyclic number.

It is not a de Polignac number, because 213031069 - 2¹¹ = 213029021 is a prime.

It is a super-2 number, since 2×213031069² = 90764472718565522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213031019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106515534 + 106515535.

It is an arithmetic number, because the mean of its divisors is an integer number (106515535).

Almost surely, 2^213031069 is an apocalyptic number.

It is an amenable number.

213031069 is a deficient number, since it is larger than the sum of its proper divisors (1).

213031069 is an equidigital number, since it uses as much as digits as its factorization.

213031069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 213031069 is about 14595.5838869159. The cubic root of 213031069 is about 597.2382976516.

The spelling of 213031069 in words is "two hundred thirteen million, thirty-one thousand, sixty-nine".