901231 has 4 divisors (see below), whose sum is σ = 904392. Its totient is φ = 898072.

The previous prime is 901213. The next prime is 901247. The reversal of 901231 is 132109.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 901231 - 2⁹ = 900719 is a prime.

It is a super-2 number, since 2×901231² = 1624434630722, which contains 22 as substring.

It is a Duffinian number.

901231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (226098).

2⁹⁰¹²³¹ is an apocalyptic number.

901231 is a deficient number, since it is larger than the sum of its proper divisors (3161).

901231 is a wasteful number, since it uses less digits than its factorization.

901231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 901231 is about 949.3318703172. The cubic root of 901231 is about 96.5929375705.

The spelling of 901231 in words is "nine hundred one thousand, two hundred thirty-one".