213223010137 has 2 divisors, whose sum is σ = 213223010138. Its totient is φ = 213223010136.

The previous prime is 213223010131. The next prime is 213223010233. The reversal of 213223010137 is 731010322312.

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., 129338052496 + 83884957641 = 359636^2 + 289629^2 .

It is a cyclic number.

It is not a de Polignac number, because 213223010137 - 2⁷ = 213223010009 is a prime.

It is not a weakly prime, because it can be changed into another prime (213223010131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106611505068 + 106611505069.

It is an arithmetic number, because the mean of its divisors is an integer number (106611505069).

Almost surely, 2^213223010137 is an apocalyptic number.

It is an amenable number.

213223010137 is a deficient number, since it is larger than the sum of its proper divisors (1).

213223010137 is an equidigital number, since it uses as much as digits as its factorization.

213223010137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 213223010137 its reverse (731010322312), we get a palindrome (944233332449).

The spelling of 213223010137 in words is "two hundred thirteen billion, two hundred twenty-three million, ten thousand, one hundred thirty-seven".