1131407533 has 2 divisors, whose sum is σ = 1131407534. Its totient is φ = 1131407532.

The previous prime is 1131407489. The next prime is 1131407591. The reversal of 1131407533 is 3357041311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 899820009 + 231587524 = 29997^2 + 15218^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131407533 - 2⁹ = 1131407021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131407593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565703766 + 565703767.

It is an arithmetic number, because the mean of its divisors is an integer number (565703767).

Almost surely, 2^1131407533 is an apocalyptic number.

It is an amenable number.

1131407533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131407533 is an equidigital number, since it uses as much as digits as its factorization.

1131407533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1131407533 is about 33636.4019032952. The cubic root of 1131407533 is about 1042.0127236041.

Adding to 1131407533 its reverse (3357041311), we get a palindrome (4488448844).

The spelling of 1131407533 in words is "one billion, one hundred thirty-one million, four hundred seven thousand, five hundred thirty-three".