213349139 has 2 divisors, whose sum is σ = 213349140. Its totient is φ = 213349138.

The previous prime is 213349111. The next prime is 213349151. The reversal of 213349139 is 931943312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213349139 - 2¹² = 213345043 is a prime.

It is a super-2 number, since 2×213349139² = 91035710224082642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213349099 and 213349108.

It is not a weakly prime, because it can be changed into another prime (213349739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106674569 + 106674570.

It is an arithmetic number, because the mean of its divisors is an integer number (106674570).

Almost surely, 2^213349139 is an apocalyptic number.

213349139 is a deficient number, since it is larger than the sum of its proper divisors (1).

213349139 is an equidigital number, since it uses as much as digits as its factorization.

213349139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 35.

The square root of 213349139 is about 14606.4759267936. The cubic root of 213349139 is about 597.5353890910.

The spelling of 213349139 in words is "two hundred thirteen million, three hundred forty-nine thousand, one hundred thirty-nine".