1231007 has 4 divisors (see below), whose sum is σ = 1240536. Its totient is φ = 1221480.

The previous prime is 1231003. The next prime is 1231039. The reversal of 1231007 is 7001321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7001321 = 1409 ⋅4969.

It is a cyclic number.

It is not a de Polignac number, because 1231007 - 2² = 1231003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230982 and 1231000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4568 + ... + 4829.

It is an arithmetic number, because the mean of its divisors is an integer number (310134).

2^1231007 is an apocalyptic number.

1231007 is a deficient number, since it is larger than the sum of its proper divisors (9529).

1231007 is an equidigital number, since it uses as much as digits as its factorization.

1231007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 1231007 is about 1109.5075484196. The cubic root of 1231007 is about 107.1733585964.

Adding to 1231007 its reverse (7001321), we get a palindrome (8232328).

The spelling of 1231007 in words is "one million, two hundred thirty-one thousand, seven".