1145307131 has 2 divisors, whose sum is σ = 1145307132. Its totient is φ = 1145307130.

The previous prime is 1145307127. The next prime is 1145307133. The reversal of 1145307131 is 1317035411.

It is a strong prime.

It is an emirp because it is prime and its reverse (1317035411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1145307131 - 2² = 1145307127 is a prime.

It is a super-2 number, since 2×1145307131² = 2623456848638902322, which contains 22 as substring.

Together with 1145307133, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145307131.

It is not a weakly prime, because it can be changed into another prime (1145307133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572653565 + 572653566.

It is an arithmetic number, because the mean of its divisors is an integer number (572653566).

Almost surely, 2^1145307131 is an apocalyptic number.

1145307131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145307131 is an equidigital number, since it uses as much as digits as its factorization.

1145307131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1145307131 is about 33842.3866031933. The cubic root of 1145307131 is about 1046.2624885518.

The spelling of 1145307131 in words is "one billion, one hundred forty-five million, three hundred seven thousand, one hundred thirty-one".