2003121131 has 16 divisors (see below), whose sum is σ = 2226787200. Its totient is φ = 1786699200.

The previous prime is 2003121121. The next prime is 2003121137. The reversal of 2003121131 is 1311213002.

It is a de Polignac number, because none of the positive numbers 2^k-2003121131 is a prime.

It is a super-2 number, since 2×2003121131² = 8024988530917438322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2003121137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120440 + ... + 136058.

It is an arithmetic number, because the mean of its divisors is an integer number (139174200).

Almost surely, 2^2003121131 is an apocalyptic number.

2003121131 is a deficient number, since it is larger than the sum of its proper divisors (223666069).

2003121131 is a wasteful number, since it uses less digits than its factorization.

2003121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15850.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2003121131 is about 44756.2412519193. The cubic root of 2003121131 is about 1260.5761057015.

Adding to 2003121131 its reverse (1311213002), we get a palindrome (3314334133).

The spelling of 2003121131 in words is "two billion, three million, one hundred twenty-one thousand, one hundred thirty-one".