212831019 has 12 divisors (see below), whose sum is σ = 308308000. Its totient is φ = 141478704.

The previous prime is 212831009. The next prime is 212831033. The reversal of 212831019 is 910138212.

It is not a de Polignac number, because 212831019 - 2¹¹ = 212828971 is a prime.

It is a super-2 number, since 2×212831019² = 90594085297156722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212830983 and 212831001.

It is not an unprimeable number, because it can be changed into a prime (212831009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30739 + ... + 37020.

Almost surely, 2^212831019 is an apocalyptic number.

212831019 is a deficient number, since it is larger than the sum of its proper divisors (95476981).

212831019 is a wasteful number, since it uses less digits than its factorization.

212831019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68114 (or 68111 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 212831019 is about 14588.7291770051. The cubic root of 212831019 is about 597.0512905943.

The spelling of 212831019 in words is "two hundred twelve million, eight hundred thirty-one thousand, nineteen".