2061531285 has 32 divisors (see below), whose sum is σ = 3754764288. Its totient is φ = 956070720.

The previous prime is 2061531271. The next prime is 2061531289. The reversal of 2061531285 is 5821351602.

It is not a de Polignac number, because 2061531285 - 2⁸ = 2061531029 is a prime.

It is a super-2 number, since 2×2061531285² = 8499822478067502450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061531289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267817 + ... + 275406.

It is an arithmetic number, because the mean of its divisors is an integer number (117336384).

Almost surely, 2^2061531285 is an apocalyptic number.

It is an amenable number.

2061531285 is a deficient number, since it is larger than the sum of its proper divisors (1693233003).

2061531285 is a wasteful number, since it uses less digits than its factorization.

2061531285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543265.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 2061531285 is about 45404.0888577229. The cubic root of 2061531285 is about 1272.7115242849.

Adding to 2061531285 its reverse (5821351602), we get a palindrome (7882882887).

The spelling of 2061531285 in words is "two billion, sixty-one million, five hundred thirty-one thousand, two hundred eighty-five".