123815212 has 6 divisors (see below), whose sum is σ = 216676628. Its totient is φ = 61907604.

The previous prime is 123815201. The next prime is 123815231. The reversal of 123815212 is 212518321.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15476898 + ... + 15476905.

Almost surely, 2^123815212 is an apocalyptic number.

It is an amenable number.

123815212 is a deficient number, since it is larger than the sum of its proper divisors (92861416).

123815212 is a wasteful number, since it uses less digits than its factorization.

123815212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30953807 (or 30953805 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 123815212 is about 11127.2284060318. The cubic root of 123815212 is about 498.4152652044.

The spelling of 123815212 in words is "one hundred twenty-three million, eight hundred fifteen thousand, two hundred twelve".