2003113271261 has 8 divisors (see below), whose sum is σ = 2021344978944. Its totient is φ = 1984919988240.

The previous prime is 2003113271239. The next prime is 2003113271287. The reversal of 2003113271261 is 1621723113002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003113271261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003113271231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9501425 + ... + 9709958.

It is an arithmetic number, because the mean of its divisors is an integer number (252668122368).

Almost surely, 2^{2003113271261} is an apocalyptic number.

It is an amenable number.

2003113271261 is a deficient number, since it is larger than the sum of its proper divisors (18231707683).

2003113271261 is a wasteful number, since it uses less digits than its factorization.

2003113271261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19212331.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 2003113271261 its reverse (1621723113002), we get a palindrome (3624836384263).

The spelling of 2003113271261 in words is "two trillion, three billion, one hundred thirteen million, two hundred seventy-one thousand, two hundred sixty-one".