23212131210 has 24 divisors (see below), whose sum is σ = 60351541380. Its totient is φ = 6189901632.

The previous prime is 23212131209. The next prime is 23212131221. The reversal of 23212131210 is 1213121232.

23212131210 is a `hidden beast` number, since 2 + 321 + 2 + 131 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22951341009 + 260790201 = 151497^2 + 16149^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128956195 + ... + 128956374.

Almost surely, 2^23212131210 is an apocalyptic number.

23212131210 is an abundant number, since it is smaller than the sum of its proper divisors (37139410170).

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

23212131210 is a wasteful number, since it uses less digits than its factorization.

23212131210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257912582 (or 257912579 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23212131210 its reverse (1213121232), we get a palindrome (24425252442).

The spelling of 23212131210 in words is "twenty-three billion, two hundred twelve million, one hundred thirty-one thousand, two hundred ten".