1531420867 has 2 divisors, whose sum is σ = 1531420868. Its totient is φ = 1531420866.

The previous prime is 1531420837. The next prime is 1531420871. The reversal of 1531420867 is 7680241351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1531420867 - 2¹⁵ = 1531388099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1531420837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765710433 + 765710434.

It is an arithmetic number, because the mean of its divisors is an integer number (765710434).

Almost surely, 2^1531420867 is an apocalyptic number.

1531420867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531420867 is an equidigital number, since it uses as much as digits as its factorization.

1531420867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1531420867 is about 39133.3728037848. The cubic root of 1531420867 is about 1152.6519433340.

The spelling of 1531420867 in words is "one billion, five hundred thirty-one million, four hundred twenty thousand, eight hundred sixty-seven".