1531413 has 16 divisors (see below), whose sum is σ = 2443840. Its totient is φ = 942192.

The previous prime is 1531379. The next prime is 1531447. The reversal of 1531413 is 3141351.

It is an interprime number because it is at equal distance from previous prime (1531379) and next prime (1531447).

It is not a de Polignac number, because 1531413 - 2⁸ = 1531157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1831 + ... + 2532.

It is an arithmetic number, because the mean of its divisors is an integer number (152740).

2^1531413 is an apocalyptic number.

1531413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1531413 is a deficient number, since it is larger than the sum of its proper divisors (912427).

1531413 is a wasteful number, since it uses less digits than its factorization.

1531413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385 (or 4379 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 1531413 is about 1237.5027272697. The cubic root of 1531413 is about 115.2649969583.

Adding to 1531413 its reverse (3141351), we get a palindrome (4672764).

The spelling of 1531413 in words is "one million, five hundred thirty-one thousand, four hundred thirteen".