1231107 has 8 divisors (see below), whose sum is σ = 1681680. Its totient is φ = 800640.

The previous prime is 1231099. The next prime is 1231127. The reversal of 1231107 is 7011321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231107 - 2³ = 1231099 is a prime.

1231107 is a modest number, since divided by 1107 gives 123 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1231127) 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, 4882 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (210210).

2^1231107 is an apocalyptic number.

1231107 is a deficient number, since it is larger than the sum of its proper divisors (450573).

1231107 is a wasteful number, since it uses less digits than its factorization.

1231107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 1231107 is about 1109.5526125426. The cubic root of 1231107 is about 107.1762605690.

Adding to 1231107 its reverse (7011321), we get a palindrome (8242428).

It can be divided in two parts, 123 and 1107, that multiplied together give a square (136161 = 369²).

The spelling of 1231107 in words is "one million, two hundred thirty-one thousand, one hundred seven".