213437306011003 has 4 divisors (see below), whose sum is σ = 213541269630208. Its totient is φ = 213333342391800.

The previous prime is 213437306010977. The next prime is 213437306011079. The reversal of 213437306011003 is 300110603734312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213437306011003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213437306011003.

It is not an unprimeable number, because it can be changed into a prime (213437306011703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51981806523 + ... + 51981810628.

It is an arithmetic number, because the mean of its divisors is an integer number (53385317407552).

Almost surely, 2^{213437306011003} is an apocalyptic number.

213437306011003 is a deficient number, since it is larger than the sum of its proper divisors (103963619205).

213437306011003 is a wasteful number, since it uses less digits than its factorization.

213437306011003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103963619204.

The product of its (nonzero) digits is 27216, while the sum is 34.

Adding to 213437306011003 its reverse (300110603734312), we get a palindrome (513547909745315).

The spelling of 213437306011003 in words is "two hundred thirteen trillion, four hundred thirty-seven billion, three hundred six million, eleven thousand, three".