2002031131 has 4 divisors (see below), whose sum is σ = 2026152072. Its totient is φ = 1977910192.

The previous prime is 2002031123. The next prime is 2002031147. The reversal of 2002031131 is 1311302002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311302002 = 2 ⋅655651001.

It is a cyclic number.

It is not a de Polignac number, because 2002031131 - 2³ = 2002031123 is a prime.

It is a super-2 number, since 2×2002031131² = 8016257298986278322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002031431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12060346 + ... + 12060511.

It is an arithmetic number, because the mean of its divisors is an integer number (506538018).

Almost surely, 2^2002031131 is an apocalyptic number.

2002031131 is a deficient number, since it is larger than the sum of its proper divisors (24120941).

2002031131 is an equidigital number, since it uses as much as digits as its factorization.

2002031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24120940.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2002031131 is about 44744.0625223057. The cubic root of 2002031131 is about 1260.3474163767.

Adding to 2002031131 its reverse (1311302002), we get a palindrome (3313333133).

The spelling of 2002031131 in words is "two billion, two million, thirty-one thousand, one hundred thirty-one".