63231340 has 12 divisors (see below), whose sum is σ = 132785856. Its totient is φ = 25292528.

The previous prime is 63231283. The next prime is 63231341. The reversal of 63231340 is 4313236.

It is not an unprimeable number, because it can be changed into a prime (63231341) 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, 1580764 + ... + 1580803.

It is an arithmetic number, because the mean of its divisors is an integer number (11065488).

Almost surely, 2^63231340 is an apocalyptic number.

It is an amenable number.

63231340 is an abundant number, since it is smaller than the sum of its proper divisors (69554516).

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

63231340 is a wasteful number, since it uses less digits than its factorization.

63231340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161576 (or 3161574 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 63231340 is about 7951.8136296068. The cubic root of 63231340 is about 398.3921708730.

Adding to 63231340 its reverse (4313236), we get a palindrome (67544576).

The spelling of 63231340 in words is "sixty-three million, two hundred thirty-one thousand, three hundred forty".