2031315261 has 16 divisors (see below), whose sum is σ = 2872666944. Its totient is φ = 1272360704.

The previous prime is 2031315241. The next prime is 2031315271. The reversal of 2031315261 is 1625131302.

It is a cyclic number.

It is not a de Polignac number, because 2031315261 - 2⁶ = 2031315197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031315241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3990 + ... + 63863.

It is an arithmetic number, because the mean of its divisors is an integer number (179541684).

Almost surely, 2^2031315261 is an apocalyptic number.

It is an amenable number.

2031315261 is a deficient number, since it is larger than the sum of its proper divisors (841351683).

2031315261 is a wasteful number, since it uses less digits than its factorization.

2031315261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68460.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2031315261 is about 45070.1149432748. The cubic root of 2031315261 is about 1266.4628176650.

Adding to 2031315261 its reverse (1625131302), we get a palindrome (3656446563).

The spelling of 2031315261 in words is "two billion, thirty-one million, three hundred fifteen thousand, two hundred sixty-one".