213357531492 has 192 divisors, whose sum is σ = 635734848000. Its totient is φ = 60616594944.

The previous prime is 213357531487. The next prime is 213357531539. The reversal of 213357531492 is 294135753312.

213357531492 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 575 + 31 + 49 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 173601934 + ... + 173603162.

It is an arithmetic number, because the mean of its divisors is an integer number (3311119000).

Almost surely, 2^213357531492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213357531492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317867424000).

213357531492 is an abundant number, since it is smaller than the sum of its proper divisors (422377316508).

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

213357531492 is a wasteful number, since it uses less digits than its factorization.

213357531492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355 (or 2347 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The spelling of 213357531492 in words is "two hundred thirteen billion, three hundred fifty-seven million, five hundred thirty-one thousand, four hundred ninety-two".