63231388 has 24 divisors (see below), whose sum is σ = 121080960. Its totient is φ = 28654320.

The previous prime is 63231383. The next prime is 63231419. The reversal of 63231388 is 88313236.

It is a super-3 number, since 3×63231388³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63231383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13795 + ... + 17797.

It is an arithmetic number, because the mean of its divisors is an integer number (5045040).

Almost surely, 2^63231388 is an apocalyptic number.

It is an amenable number.

63231388 is a deficient number, since it is larger than the sum of its proper divisors (57849572).

63231388 is a wasteful number, since it uses less digits than its factorization.

63231388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377 (or 4375 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 63231388 is about 7951.8166477856. The cubic root of 63231388 is about 398.3922716817.

The spelling of 63231388 in words is "sixty-three million, two hundred thirty-one thousand, three hundred eighty-eight".