1533131273 has 2 divisors, whose sum is σ = 1533131274. Its totient is φ = 1533131272.

The previous prime is 1533131233. The next prime is 1533131293. The reversal of 1533131273 is 3721313351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1506371344 + 26759929 = 38812^2 + 5173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1533131273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1533131233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766565636 + 766565637.

It is an arithmetic number, because the mean of its divisors is an integer number (766565637).

Almost surely, 2^1533131273 is an apocalyptic number.

It is an amenable number.

1533131273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533131273 is an equidigital number, since it uses as much as digits as its factorization.

1533131273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 29.

The square root of 1533131273 is about 39155.2202522218. The cubic root of 1533131273 is about 1153.0809064673.

The spelling of 1533131273 in words is "one billion, five hundred thirty-three million, one hundred thirty-one thousand, two hundred seventy-three".