197312212 has 12 divisors (see below), whose sum is σ = 346387860. Its totient is φ = 98344256.

The previous prime is 197312191. The next prime is 197312233. The reversal of 197312212 is 212213791.

It is an interprime number because it is at equal distance from previous prime (197312191) and next prime (197312233).

It can be written as a sum of positive squares in 2 ways, for example, as 37896336 + 159415876 = 6156^2 + 12626^2 .

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, 76537 + ... + 79072.

It is an arithmetic number, because the mean of its divisors is an integer number (28865655).

Almost surely, 2^197312212 is an apocalyptic number.

It is an amenable number.

197312212 is a deficient number, since it is larger than the sum of its proper divisors (149075648).

197312212 is a wasteful number, since it uses less digits than its factorization.

197312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155930 (or 155928 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 197312212 is about 14046.7865364289. The cubic root of 197312212 is about 582.1720105798.

The spelling of 197312212 in words is "one hundred ninety-seven million, three hundred twelve thousand, two hundred twelve".