213131652330 has 64 divisors (see below), whose sum is σ = 513804238848. Its totient is φ = 56581412160.

The previous prime is 213131652319. The next prime is 213131652341. The reversal of 213131652330 is 33256131312.

It is an interprime number because it is at equal distance from previous prime (213131652319) and next prime (213131652341).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6268075 + ... + 6301985.

It is an arithmetic number, because the mean of its divisors is an integer number (8028191232).

Almost surely, 2^213131652330 is an apocalyptic number.

213131652330 is an abundant number, since it is smaller than the sum of its proper divisors (300672586518).

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

213131652330 is a wasteful number, since it uses less digits than its factorization.

213131652330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34851.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 213131652330 its reverse (33256131312), we get a palindrome (246387783642).

The spelling of 213131652330 in words is "two hundred thirteen billion, one hundred thirty-one million, six hundred fifty-two thousand, three hundred thirty".