1012120531 has 4 divisors (see below), whose sum is σ = 1020090112. Its totient is φ = 1004150952.

The previous prime is 1012120507. The next prime is 1012120573. The reversal of 1012120531 is 1350212101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012120531 - 2²¹ = 1010023379 is a prime.

It is a super-2 number, since 2×1012120531² = 2048775938543443922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012120331) 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 in 3 ways as a sum of consecutive naturals, for example, 3984600 + ... + 3984853.

It is an arithmetic number, because the mean of its divisors is an integer number (255022528).

Almost surely, 2^1012120531 is an apocalyptic number.

1012120531 is a deficient number, since it is larger than the sum of its proper divisors (7969581).

1012120531 is an equidigital number, since it uses as much as digits as its factorization.

1012120531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969580.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1012120531 is about 31813.8418145310. The cubic root of 1012120531 is about 1004.0239630027.

Adding to 1012120531 its reverse (1350212101), we get a palindrome (2362332632).

The spelling of 1012120531 in words is "one billion, twelve million, one hundred twenty thousand, five hundred thirty-one".