231420177 has 12 divisors (see below), whose sum is σ = 345057024. Its totient is φ = 149303160.

The previous prime is 231420173. The next prime is 231420187. The reversal of 231420177 is 771024132.

It is a happy number.

231420177 is a `hidden beast` number, since 231 + 420 + 1 + 7 + 7 = 666.

It is not a de Polignac number, because 231420177 - 2² = 231420173 is a prime.

It is a super-2 number, since 2×231420177² = 107110596645422658, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 231420177.

It is not an unprimeable number, because it can be changed into a prime (231420173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414453 + ... + 415010.

It is an arithmetic number, because the mean of its divisors is an integer number (28754752).

Almost surely, 2^231420177 is an apocalyptic number.

It is an amenable number.

231420177 is a deficient number, since it is larger than the sum of its proper divisors (113636847).

231420177 is a wasteful number, since it uses less digits than its factorization.

231420177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829500 (or 829497 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 231420177 is about 15212.5006820049. The cubic root of 231420177 is about 613.9510415539.

The spelling of 231420177 in words is "two hundred thirty-one million, four hundred twenty thousand, one hundred seventy-seven".