1264831 has 4 divisors (see below), whose sum is σ = 1305664. Its totient is φ = 1224000.

The previous prime is 1264829. The next prime is 1264853. The reversal of 1264831 is 1384621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1384621 = 7 ⋅197803.

It is a cyclic number.

It is not a de Polignac number, because 1264831 - 2¹ = 1264829 is a prime.

It is a super-2 number, since 2×1264831² = 3199594917122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1264796 and 1264805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264801) 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, 20370 + ... + 20431.

It is an arithmetic number, because the mean of its divisors is an integer number (326416).

2^1264831 is an apocalyptic number.

1264831 is a deficient number, since it is larger than the sum of its proper divisors (40833).

1264831 is an equidigital number, since it uses as much as digits as its factorization.

1264831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40832.

The product of its digits is 1152, while the sum is 25.

The square root of 1264831 is about 1124.6470557468. The cubic root of 1264831 is about 108.1460928701.

The spelling of 1264831 in words is "one million, two hundred sixty-four thousand, eight hundred thirty-one".