212132031 has 4 divisors (see below), whose sum is σ = 282842712. Its totient is φ = 141421352.

The previous prime is 212132021. The next prime is 212132047. The reversal of 212132031 is 130231212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212132031 - 2⁵ = 212131999 is a prime.

It is a super-2 number, since 2×212132031² = 89999997152369922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212132031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212132021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35355336 + ... + 35355341.

It is an arithmetic number, because the mean of its divisors is an integer number (70710678).

Almost surely, 2^212132031 is an apocalyptic number.

212132031 is a deficient number, since it is larger than the sum of its proper divisors (70710681).

212132031 is an equidigital number, since it uses as much as digits as its factorization.

212132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70710680.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 212132031 is about 14564.7530360113. The cubic root of 212132031 is about 596.3969539641.

Adding to 212132031 its reverse (130231212), we get a palindrome (342363243).

The spelling of 212132031 in words is "two hundred twelve million, one hundred thirty-two thousand, thirty-one".