1131450311 has 2 divisors, whose sum is σ = 1131450312. Its totient is φ = 1131450310.

The previous prime is 1131450259. The next prime is 1131450329. The reversal of 1131450311 is 1130541311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131450311 - 2¹⁰ = 1131449287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131450371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565725155 + 565725156.

It is an arithmetic number, because the mean of its divisors is an integer number (565725156).

Almost surely, 2^1131450311 is an apocalyptic number.

1131450311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131450311 is an equidigital number, since it uses as much as digits as its factorization.

1131450311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1131450311 is about 33637.0377857504. The cubic root of 1131450311 is about 1042.0258561130.

Adding to 1131450311 its reverse (1130541311), we get a palindrome (2261991622).

The spelling of 1131450311 in words is "one billion, one hundred thirty-one million, four hundred fifty thousand, three hundred eleven".