231367312 has 20 divisors (see below), whose sum is σ = 489026736. Its totient is φ = 105166880.

The previous prime is 231367273. The next prime is 231367319. The reversal of 231367312 is 213763132.

It is not an unprimeable number, because it can be changed into a prime (231367319) 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, 657118 + ... + 657469.

Almost surely, 2^231367312 is an apocalyptic number.

231367312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231367312 is an abundant number, since it is smaller than the sum of its proper divisors (257659424).

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

231367312 is a wasteful number, since it uses less digits than its factorization.

231367312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314606 (or 1314600 counting only the distinct ones).

The product of its digits is 4536, while the sum is 28.

The square root of 231367312 is about 15210.7630314853. The cubic root of 231367312 is about 613.9042882213.

The spelling of 231367312 in words is "two hundred thirty-one million, three hundred sixty-seven thousand, three hundred twelve".