213031130233 has 32 divisors (see below), whose sum is σ = 231846100992. Its totient is φ = 195329836800.

The previous prime is 213031130183. The next prime is 213031130261. The reversal of 213031130233 is 332031130312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213031130233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213031130933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7064518 + ... + 7094608.

It is an arithmetic number, because the mean of its divisors is an integer number (7245190656).

Almost surely, 2^213031130233 is an apocalyptic number.

It is an amenable number.

213031130233 is a deficient number, since it is larger than the sum of its proper divisors (18814970759).

213031130233 is a wasteful number, since it uses less digits than its factorization.

213031130233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30325.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 213031130233 its reverse (332031130312), we get a palindrome (545062260545).

The spelling of 213031130233 in words is "two hundred thirteen billion, thirty-one million, one hundred thirty thousand, two hundred thirty-three".