1531433461 has 2 divisors, whose sum is σ = 1531433462. Its totient is φ = 1531433460.

The previous prime is 1531433447. The next prime is 1531433503. The reversal of 1531433461 is 1643341351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1343222500 + 188210961 = 36650^2 + 13719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1531433461 - 2¹⁷ = 1531302389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1531433401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765716730 + 765716731.

It is an arithmetic number, because the mean of its divisors is an integer number (765716731).

Almost surely, 2^1531433461 is an apocalyptic number.

It is an amenable number.

1531433461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531433461 is an equidigital number, since it uses as much as digits as its factorization.

1531433461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 1531433461 is about 39133.5337147056. The cubic root of 1531433461 is about 1152.6551030268.

The spelling of 1531433461 in words is "one billion, five hundred thirty-one million, four hundred thirty-three thousand, four hundred sixty-one".