2531019013 has 8 divisors (see below), whose sum is σ = 2671617920. Its totient is φ = 2397800988.

The previous prime is 2531018983. The next prime is 2531019059. The reversal of 2531019013 is 3109101352.

It is a de Polignac number, because none of the positive numbers 2^k-2531019013 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 (2531019083) 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, 177645 + ... + 191362.

It is an arithmetic number, because the mean of its divisors is an integer number (333952240).

Almost surely, 2^2531019013 is an apocalyptic number.

It is an amenable number.

2531019013 is a deficient number, since it is larger than the sum of its proper divisors (140598907).

2531019013 is an frugal number, since it uses more digits than its factorization.

2531019013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369064 (or 369026 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 2531019013 is about 50309.2338741110. The cubic root of 2531019013 is about 1362.7989884263.

The spelling of 2531019013 in words is "two billion, five hundred thirty-one million, nineteen thousand, thirteen".