1312461 has 6 divisors (see below), whose sum is σ = 1895790. Its totient is φ = 874968.

The previous prime is 1312459. The next prime is 1312471. The reversal of 1312461 is 1642131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 447561 = 930^2 + 669^2 .

It is not a de Polignac number, because 1312461 - 2¹ = 1312459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72906 + ... + 72923.

It is an arithmetic number, because the mean of its divisors is an integer number (315965).

2^1312461 is an apocalyptic number.

It is an amenable number.

1312461 is a deficient number, since it is larger than the sum of its proper divisors (583329).

1312461 is a wasteful number, since it uses less digits than its factorization.

1312461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145835 (or 145832 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1312461 is about 1145.6269026171. The cubic root of 1312461 is about 109.4868940341.

Adding to 1312461 its reverse (1642131), we get a palindrome (2954592).

The spelling of 1312461 in words is "one million, three hundred twelve thousand, four hundred sixty-one".