212156313 has 4 divisors (see below), whose sum is σ = 282875088. Its totient is φ = 141437540.

The previous prime is 212156303. The next prime is 212156333. The reversal of 212156313 is 313651212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212156313 - 2⁶ = 212156249 is a prime.

It is a super-2 number, since 2×212156313² = 90020602291507938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212156303) 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, 35359383 + ... + 35359388.

It is an arithmetic number, because the mean of its divisors is an integer number (70718772).

Almost surely, 2^212156313 is an apocalyptic number.

It is an amenable number.

212156313 is a deficient number, since it is larger than the sum of its proper divisors (70718775).

212156313 is an equidigital number, since it uses as much as digits as its factorization.

212156313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70718774.

The product of its digits is 1080, while the sum is 24.

The square root of 212156313 is about 14565.5865999279. The cubic root of 212156313 is about 596.4197089094.

The spelling of 212156313 in words is "two hundred twelve million, one hundred fifty-six thousand, three hundred thirteen".