213131023233332 has 12 divisors (see below), whose sum is σ = 372987382866756. Its totient is φ = 106563199557120.

The previous prime is 213131023233299. The next prime is 213131023233361. The reversal of 213131023233332 is 233332320131312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 175925366306596 + 37205656926736 = 13263686^2 + 6099644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577807469 + ... + 578176212.

It is an arithmetic number, because the mean of its divisors is an integer number (31082281905563).

Almost surely, 2^{213131023233332} is an apocalyptic number.

It is an amenable number.

213131023233332 is a deficient number, since it is larger than the sum of its proper divisors (159856359633424).

213131023233332 is a wasteful number, since it uses less digits than its factorization.

213131023233332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156029778 (or 1156029776 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 32.

Adding to 213131023233332 its reverse (233332320131312), we get a palindrome (446463343364644).

The spelling of 213131023233332 in words is "two hundred thirteen trillion, one hundred thirty-one billion, twenty-three million, two hundred thirty-three thousand, three hundred thirty-two".