1265331 has 8 divisors (see below), whose sum is σ = 1696464. Its totient is φ = 838880.

The previous prime is 1265321. The next prime is 1265333. The reversal of 1265331 is 1335621.

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 1265331 - 2⁹ = 1264819 is a prime.

It is a super-2 number, since 2×1265331² = 3202125079122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1265298 and 1265307.

It is not an unprimeable number, because it can be changed into a prime (1265333) 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, 480 + ... + 1661.

It is an arithmetic number, because the mean of its divisors is an integer number (212058).

2^1265331 is an apocalyptic number.

1265331 is a deficient number, since it is larger than the sum of its proper divisors (431133).

1265331 is a wasteful number, since it uses less digits than its factorization.

1265331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341.

The product of its digits is 540, while the sum is 21.

The square root of 1265331 is about 1124.8693257441. The cubic root of 1265331 is about 108.1603413936.

It can be divided in two parts, 1265 and 331, that added together give a triangular number (1596 = T₅₆).

The spelling of 1265331 in words is "one million, two hundred sixty-five thousand, three hundred thirty-one".