1231260 has 24 divisors (see below), whose sum is σ = 3447696. Its totient is φ = 328320.

The previous prime is 1231247. The next prime is 1231261. The reversal of 1231260 is 621321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231261) 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, 10201 + ... + 10320.

It is an arithmetic number, because the mean of its divisors is an integer number (143654).

2^1231260 is an apocalyptic number.

1231260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231260 is an abundant number, since it is smaller than the sum of its proper divisors (2216436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231260 is a wasteful number, since it uses less digits than its factorization.

1231260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20533 (or 20531 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1231260 is about 1109.6215571085. The cubic root of 1231260 is about 107.1807002829.

Adding to 1231260 its reverse (621321), we get a palindrome (1852581).

It can be divided in two parts, 12312 and 60, that multiplied together give a triangular number (738720 = T₁₂₁₅).

The spelling of 1231260 in words is "one million, two hundred thirty-one thousand, two hundred sixty".