63231155 has 8 divisors (see below), whose sum is σ = 81714192. Its totient is φ = 46693728.

The previous prime is 63231149. The next prime is 63231169. The reversal of 63231155 is 55113236.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63231155 - 2⁴ = 63231139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486329 + ... + 486458.

It is an arithmetic number, because the mean of its divisors is an integer number (10214274).

Almost surely, 2^63231155 is an apocalyptic number.

63231155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

63231155 is a deficient number, since it is larger than the sum of its proper divisors (18483037).

63231155 is a wasteful number, since it uses less digits than its factorization.

63231155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972805.

The product of its digits is 2700, while the sum is 26.

The square root of 63231155 is about 7951.8019970319. The cubic root of 63231155 is about 398.3917823387.

The spelling of 63231155 in words is "sixty-three million, two hundred thirty-one thousand, one hundred fifty-five".