1302231131 has 4 divisors (see below), whose sum is σ = 1303275000. Its totient is φ = 1301187264.

The previous prime is 1302231121. The next prime is 1302231137. The reversal of 1302231131 is 1311322031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1302231131 - 2²² = 1298036827 is a prime.

It is a super-2 number, since 2×1302231131² = 3391611837091078322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1302231137) 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, 520061 + ... + 522558.

It is an arithmetic number, because the mean of its divisors is an integer number (325818750).

Almost surely, 2^1302231131 is an apocalyptic number.

1302231131 is a deficient number, since it is larger than the sum of its proper divisors (1043869).

1302231131 is a wasteful number, since it uses less digits than its factorization.

1302231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043868.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1302231131 is about 36086.4397107833. The cubic root of 1302231131 is about 1092.0168955666.

Adding to 1302231131 its reverse (1311322031), we get a palindrome (2613553162).

The spelling of 1302231131 in words is "one billion, three hundred two million, two hundred thirty-one thousand, one hundred thirty-one".