1270531 has 2 divisors, whose sum is σ = 1270532. Its totient is φ = 1270530.

The previous prime is 1270513. The next prime is 1270537. The reversal of 1270531 is 1350721.

Together with previous prime (1270513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1270531 - 2⁵ = 1270499 is a prime.

It is a super-2 number, since 2×1270531² = 3228498043922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1270499 and 1270508.

It is not a weakly prime, because it can be changed into another prime (1270537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635265 + 635266.

It is an arithmetic number, because the mean of its divisors is an integer number (635266).

2^1270531 is an apocalyptic number.

1270531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1270531 is an equidigital number, since it uses as much as digits as its factorization.

1270531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 1270531 is about 1127.1783354909. The cubic root of 1270531 is about 108.3083040139.

The spelling of 1270531 in words is "one million, two hundred seventy thousand, five hundred thirty-one".