213550031450 has 48 divisors (see below), whose sum is σ = 454040880000. Its totient is φ = 73201907520.

The previous prime is 213550031417. The next prime is 213550031467. The reversal of 213550031450 is 54130055312.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1688624 + ... + 1810676.

It is an arithmetic number, because the mean of its divisors is an integer number (9459185000).

Almost surely, 2^213550031450 is an apocalyptic number.

213550031450 is an abundant number, since it is smaller than the sum of its proper divisors (240490848550).

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

213550031450 is a wasteful number, since it uses less digits than its factorization.

213550031450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127071 (or 127066 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 213550031450 its reverse (54130055312), we get a palindrome (267680086762).

The spelling of 213550031450 in words is "two hundred thirteen billion, five hundred fifty million, thirty-one thousand, four hundred fifty".