2002012531 has 12 divisors (see below), whose sum is σ = 2137898880. Its totient is φ = 1874330240.

The previous prime is 2002012487. The next prime is 2002012541. The reversal of 2002012531 is 1352102002.

It is not a de Polignac number, because 2002012531 - 2²⁹ = 1465141619 is a prime.

It is a super-2 number, since 2×2002012531² = 8016108348562051922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002012541) 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 in 11 ways as a sum of consecutive naturals, for example, 37065 + ... + 73333.

It is an arithmetic number, because the mean of its divisors is an integer number (178158240).

Almost surely, 2^2002012531 is an apocalyptic number.

2002012531 is a deficient number, since it is larger than the sum of its proper divisors (135886349).

2002012531 is a wasteful number, since it uses less digits than its factorization.

2002012531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36494 (or 36477 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2002012531 is about 44743.8546730163. The cubic root of 2002012531 is about 1260.3435132515.

Adding to 2002012531 its reverse (1352102002), we get a palindrome (3354114533).

The spelling of 2002012531 in words is "two billion, two million, twelve thousand, five hundred thirty-one".