212671031 has 4 divisors (see below), whose sum is σ = 212729064. Its totient is φ = 212613000.

The previous prime is 212671027. The next prime is 212671049. The reversal of 212671031 is 130176212.

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 212671031 - 2² = 212671027 is a prime.

It is a super-2 number, since 2×212671031² = 90457934853205922, 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 = 212670988 and 212671006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212671021) 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, 23120 + ... + 30981.

It is an arithmetic number, because the mean of its divisors is an integer number (53182266).

Almost surely, 2^212671031 is an apocalyptic number.

212671031 is a deficient number, since it is larger than the sum of its proper divisors (58033).

212671031 is an equidigital number, since it uses as much as digits as its factorization.

212671031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58032.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 212671031 is about 14583.2448721127. The cubic root of 212671031 is about 596.9016492072.

The spelling of 212671031 in words is "two hundred twelve million, six hundred seventy-one thousand, thirty-one".