1231485 has 32 divisors (see below), whose sum is σ = 2160000. Its totient is φ = 596736.

The previous prime is 1231481. The next prime is 1231487. The reversal of 1231485 is 5841321.

It is not a de Polignac number, because 1231485 - 2² = 1231481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8191 + ... + 8339.

It is an arithmetic number, because the mean of its divisors is an integer number (67500).

2^1231485 is an apocalyptic number.

1231485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1231485 is a deficient number, since it is larger than the sum of its proper divisors (928515).

1231485 is a wasteful number, since it uses less digits than its factorization.

1231485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205.

The product of its digits is 960, while the sum is 24.

The square root of 1231485 is about 1109.7229383950. The cubic root of 1231485 is about 107.1872286059.

The spelling of 1231485 in words is "one million, two hundred thirty-one thousand, four hundred eighty-five".