1231707 has 8 divisors (see below), whose sum is σ = 1653760. Its totient is φ = 815400.

The previous prime is 1231697. The next prime is 1231709. The reversal of 1231707 is 7071321.

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

It is not a de Polignac number, because 1231707 - 2⁴ = 1231691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231709) 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, 907 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (206720).

2^1231707 is an apocalyptic number.

1231707 is a deficient number, since it is larger than the sum of its proper divisors (422053).

1231707 is a wasteful number, since it uses less digits than its factorization.

1231707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 1231707 is about 1109.8229588542. The cubic root of 1231707 is about 107.1936691052.

It can be divided in two parts, 123 and 1707, that added together give a triangular number (1830 = T₆₀).

The spelling of 1231707 in words is "one million, two hundred thirty-one thousand, seven hundred seven".