1231413 has 8 divisors (see below), whose sum is σ = 1694976. Its totient is φ = 794400.

The previous prime is 1231411. The next prime is 1231421. The reversal of 1231413 is 3141321.

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

It is not a de Polignac number, because 1231413 - 2¹ = 1231411 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1231392 and 1231401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231411) 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, 6528 + ... + 6713.

It is an arithmetic number, because the mean of its divisors is an integer number (211872).

2^1231413 is an apocalyptic number.

It is an amenable number.

1231413 is a deficient number, since it is larger than the sum of its proper divisors (463563).

1231413 is a wasteful number, since it uses less digits than its factorization.

1231413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275.

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

The square root of 1231413 is about 1109.6904973911. The cubic root of 1231413 is about 107.1851396291.

Adding to 1231413 its reverse (3141321), we get a palindrome (4372734).

The spelling of 1231413 in words is "one million, two hundred thirty-one thousand, four hundred thirteen".