2002531 has 2 divisors, whose sum is σ = 2002532. Its totient is φ = 2002530.

The previous prime is 2002523. The next prime is 2002547. The reversal of 2002531 is 1352002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2002531 - 2³ = 2002523 is a prime.

It is a super-2 number, since 2×2002531² = 8020260811922, which contains 22 as substring.

2002531 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2002331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001265 + 1001266.

It is an arithmetic number, because the mean of its divisors is an integer number (1001266).

2^2002531 is an apocalyptic number.

2002531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002531 is an equidigital number, since it uses as much as digits as its factorization.

2002531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2002531 is about 1415.1081230775. The cubic root of 2002531 is about 126.0452302554.

Adding to 2002531 its reverse (1352002), we get a palindrome (3354533).

The spelling of 2002531 in words is "two million, two thousand, five hundred thirty-one".