1303131 has 4 divisors (see below), whose sum is σ = 1737512. Its totient is φ = 868752.

The previous prime is 1303129. The next prime is 1303139. The reversal of 1303131 is 1313031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313031 = 3 ⋅437677.

It is not a de Polignac number, because 1303131 - 2¹ = 1303129 is a prime.

It is a super-2 number, since 2×1303131² = 3396300806322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217186 + ... + 217191.

It is an arithmetic number, because the mean of its divisors is an integer number (434378).

2^1303131 is an apocalyptic number.

1303131 is a deficient number, since it is larger than the sum of its proper divisors (434381).

1303131 is an equidigital number, since it uses as much as digits as its factorization.

1303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434380.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 1303131 is about 1141.5476336973. The cubic root of 1303131 is about 109.2268373169.

Adding to 1303131 its reverse (1313031), we get a palindrome (2616162).

The spelling of 1303131 in words is "one million, three hundred three thousand, one hundred thirty-one".