2011485631 has 4 divisors (see below), whose sum is σ = 2098941552. Its totient is φ = 1924029712.

The previous prime is 2011485629. The next prime is 2011485653. The reversal of 2011485631 is 1365841102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365841102 = 2 ⋅682920551.

It is a cyclic number.

It is not a de Polignac number, because 2011485631 - 2¹ = 2011485629 is a prime.

It is a super-2 number, since 2×2011485631² = 8092148887438936322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011485593 and 2011485602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011485601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43727926 + ... + 43727971.

It is an arithmetic number, because the mean of its divisors is an integer number (524735388).

Almost surely, 2^2011485631 is an apocalyptic number.

2011485631 is a deficient number, since it is larger than the sum of its proper divisors (87455921).

2011485631 is an equidigital number, since it uses as much as digits as its factorization.

2011485631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87455920.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 2011485631 is about 44849.5889724755. The cubic root of 2011485631 is about 1262.3282790459.

The spelling of 2011485631 in words is "two billion, eleven million, four hundred eighty-five thousand, six hundred thirty-one".