213112432 has 20 divisors (see below), whose sum is σ = 444667720. Its totient is φ = 98359488.

The previous prime is 213112399. The next prime is 213112451. The reversal of 213112432 is 234211312.

It is a happy number.

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, 512082 + ... + 512497.

It is an arithmetic number, because the mean of its divisors is an integer number (22233386).

Almost surely, 2^213112432 is an apocalyptic number.

It is an amenable number.

213112432 is an abundant number, since it is smaller than the sum of its proper divisors (231555288).

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

213112432 is a wasteful number, since it uses less digits than its factorization.

213112432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024600 (or 1024594 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 213112432 is about 14598.3708680113. The cubic root of 213112432 is about 597.3143224223.

Adding to 213112432 its reverse (234211312), we get a palindrome (447323744).

The spelling of 213112432 in words is "two hundred thirteen million, one hundred twelve thousand, four hundred thirty-two".