1248631 has 2 divisors, whose sum is σ = 1248632. Its totient is φ = 1248630.

The previous prime is 1248593. The next prime is 1248641. The reversal of 1248631 is 1368421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1248631 - 2⁷ = 1248503 is a prime.

It is a super-2 number, since 2×1248631² = 3118158748322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1248596 and 1248605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1248641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624315 + 624316.

It is an arithmetic number, because the mean of its divisors is an integer number (624316).

2^1248631 is an apocalyptic number.

1248631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248631 is an equidigital number, since it uses as much as digits as its factorization.

1248631 is an evil number, because the sum of its binary digits is even.

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

The square root of 1248631 is about 1117.4215856157. The cubic root of 1248631 is about 107.6823945218.

The spelling of 1248631 in words is "one million, two hundred forty-eight thousand, six hundred thirty-one".