1302131 has 4 divisors (see below), whose sum is σ = 1312512. Its totient is φ = 1291752.

The previous prime is 1302121. The next prime is 1302137. The reversal of 1302131 is 1312031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312031 = 7 ⋅187433.

It is a cyclic number.

It is not a de Polignac number, because 1302131 - 2¹⁴ = 1285747 is a prime.

It is a super-2 number, since 2×1302131² = 3391090282322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1302137) 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, 5000 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (328128).

2^1302131 is an apocalyptic number.

1302131 is a deficient number, since it is larger than the sum of its proper divisors (10381).

1302131 is a wasteful number, since it uses less digits than its factorization.

1302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10380.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1302131 is about 1141.1095477648. The cubic root of 1302131 is about 109.1988905772.

Adding to 1302131 its reverse (1312031), we get a palindrome (2614162).

It can be divided in two parts, 13021 and 31, that multiplied together give a triangular number (403651 = T₈₉₈).

The spelling of 1302131 in words is "one million, three hundred two thousand, one hundred thirty-one".