2031267627561 has 16 divisors (see below), whose sum is σ = 2992353335424. Its totient is φ = 1219106913024.

The previous prime is 2031267627551. The next prime is 2031267627563. The reversal of 2031267627561 is 1657267621302.

It is not a de Polignac number, because 2031267627561 - 2¹³ = 2031267619369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2031267627561.

It is not an unprimeable number, because it can be changed into a prime (2031267627563) 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, 865841806 + ... + 865844151.

It is an arithmetic number, because the mean of its divisors is an integer number (187022083464).

Almost surely, 2^{2031267627561} is an apocalyptic number.

It is an amenable number.

2031267627561 is a deficient number, since it is larger than the sum of its proper divisors (961085707863).

2031267627561 is a wasteful number, since it uses less digits than its factorization.

2031267627561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731686000.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 2031267627561 in words is "two trillion, thirty-one billion, two hundred sixty-seven million, six hundred twenty-seven thousand, five hundred sixty-one".