951231 has 4 divisors (see below), whose sum is σ = 1268312. Its totient is φ = 634152.

The previous prime is 951221. The next prime is 951259. The reversal of 951231 is 132159.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132159 = 3 ⋅44053.

It is not a de Polignac number, because 951231 - 2¹⁰ = 950207 is a prime.

It is a super-2 number, since 2×951231² = 1809680830722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 951198 and 951207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 951231.

It is not an unprimeable number, because it can be changed into a prime (951221) 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 3 ways as a sum of consecutive naturals, for example, 158536 + ... + 158541.

It is an arithmetic number, because the mean of its divisors is an integer number (317078).

2⁹⁵¹²³¹ is an apocalyptic number.

951231 is a deficient number, since it is larger than the sum of its proper divisors (317081).

951231 is a wasteful number, since it uses less digits than its factorization.

951231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317080.

The product of its digits is 270, while the sum is 21.

The square root of 951231 is about 975.3107197196. The cubic root of 951231 is about 98.3471996788.

It can be divided in two parts, 95 and 1231, that added together give a triangular number (1326 = T₅₁).

The spelling of 951231 in words is "nine hundred fifty-one thousand, two hundred thirty-one".