213133531340 has 24 divisors (see below), whose sum is σ = 450544530912. Its totient is φ = 84688819200.

The previous prime is 213133531327. The next prime is 213133531343. The reversal of 213133531340 is 43135331312.

It is not an unprimeable number, because it can be changed into a prime (213133531343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35283989 + ... + 35290028.

It is an arithmetic number, because the mean of its divisors is an integer number (18772688788).

Almost surely, 2^213133531340 is an apocalyptic number.

213133531340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213133531340 is an abundant number, since it is smaller than the sum of its proper divisors (237410999572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213133531340 is a wasteful number, since it uses less digits than its factorization.

213133531340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70574177 (or 70574175 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 213133531340 its reverse (43135331312), we get a palindrome (256268862652).

The spelling of 213133531340 in words is "two hundred thirteen billion, one hundred thirty-three million, five hundred thirty-one thousand, three hundred forty".