201438312 has 16 divisors (see below), whose sum is σ = 503595840. Its totient is φ = 67146096.

The previous prime is 201438311. The next prime is 201438313. The reversal of 201438312 is 213834102.

It is an interprime number because it is at equal distance from previous prime (201438311) and next prime (201438313).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8393263 = 201438312 / (2 + 0 + 1 + 4 + 3 + 8 + 3 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (201438311) 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, 4196608 + ... + 4196655.

It is an arithmetic number, because the mean of its divisors is an integer number (31474740).

Almost surely, 2^201438312 is an apocalyptic number.

It is an amenable number.

201438312 is an abundant number, since it is smaller than the sum of its proper divisors (302157528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201438312 is a wasteful number, since it uses less digits than its factorization.

201438312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8393272 (or 8393268 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 201438312 is about 14192.8965331253. The cubic root of 201438312 is about 586.2020836962.

The spelling of 201438312 in words is "two hundred one million, four hundred thirty-eight thousand, three hundred twelve".