1020073531 has 2 divisors, whose sum is σ = 1020073532. Its totient is φ = 1020073530.

The previous prime is 1020073513. The next prime is 1020073541. The reversal of 1020073531 is 1353700201.

Together with previous prime (1020073513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020073531 - 2⁵ = 1020073499 is a prime.

It is a super-2 number, since 2×1020073531² = 2081100017293615922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020073511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510036765 + 510036766.

It is an arithmetic number, because the mean of its divisors is an integer number (510036766).

Almost surely, 2^1020073531 is an apocalyptic number.

1020073531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020073531 is an equidigital number, since it uses as much as digits as its factorization.

1020073531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 1020073531 is about 31938.5899970553. The cubic root of 1020073531 is about 1006.6468978594.

Adding to 1020073531 its reverse (1353700201), we get a palindrome (2373773732).

The spelling of 1020073531 in words is "one billion, twenty million, seventy-three thousand, five hundred thirty-one".