213156231960 has 256 divisors, whose sum is σ = 777201868800. Its totient is φ = 45654515712.

The previous prime is 213156231863. The next prime is 213156231971. The reversal of 213156231960 is 69132651312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3237529 + ... + 3302711.

It is an arithmetic number, because the mean of its divisors is an integer number (3035944800).

Almost surely, 2^213156231960 is an apocalyptic number.

213156231960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213156231960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388600934400).

213156231960 is an abundant number, since it is smaller than the sum of its proper divisors (564045636840).

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

213156231960 is a wasteful number, since it uses less digits than its factorization.

213156231960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65450 (or 65446 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 213156231960 in words is "two hundred thirteen billion, one hundred fifty-six million, two hundred thirty-one thousand, nine hundred sixty".