1302431131 has 2 divisors, whose sum is σ = 1302431132. Its totient is φ = 1302431130.

The previous prime is 1302431129. The next prime is 1302431153. The reversal of 1302431131 is 1311342031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1302431131 - 2¹ = 1302431129 is a prime.

It is a super-2 number, since 2×1302431131² = 3392653701995878322, which contains 22 as substring.

Together with 1302431129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1302431099 and 1302431108.

It is not a weakly prime, because it can be changed into another prime (1302431531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651215565 + 651215566.

It is an arithmetic number, because the mean of its divisors is an integer number (651215566).

Almost surely, 2^1302431131 is an apocalyptic number.

1302431131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302431131 is an equidigital number, since it uses as much as digits as its factorization.

1302431131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1302431131 is about 36089.2107284158. The cubic root of 1302431131 is about 1092.0727976242.

Adding to 1302431131 its reverse (1311342031), we get a palindrome (2613773162).

The spelling of 1302431131 in words is "one billion, three hundred two million, four hundred thirty-one thousand, one hundred thirty-one".