215231132000 has 48 divisors (see below), whose sum is σ = 528822901152. Its totient is φ = 86092451200.

The previous prime is 215231131987. The next prime is 215231132003. The reversal of 215231132000 is 231132512.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215231132003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26899892 + ... + 26907891.

It is an arithmetic number, because the mean of its divisors is an integer number (11017143774).

Almost surely, 2^215231132000 is an apocalyptic number.

215231132000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215231132000 is an abundant number, since it is smaller than the sum of its proper divisors (313591769152).

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

215231132000 is an equidigital number, since it uses as much as digits as its factorization.

215231132000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53807808 (or 53807790 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 215231132000 its reverse (231132512), we get a palindrome (215462264512).

The spelling of 215231132000 in words is "two hundred fifteen billion, two hundred thirty-one million, one hundred thirty-two thousand".