2061531316 has 24 divisors (see below), whose sum is σ = 4113736200. Its totient is φ = 895506432.

The previous prime is 2061531313. The next prime is 2061531317. The reversal of 2061531316 is 6131351602.

It can be written as a sum of positive squares in 4 ways, for example, as 8100 + 2061523216 = 90^2 + 45404^2 .

It is a super-2 number, since 2×2061531316² = 8499822733697383712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061531313) 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, 1165141 + ... + 1166908.

It is an arithmetic number, because the mean of its divisors is an integer number (171405675).

Almost surely, 2^2061531316 is an apocalyptic number.

2061531316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2061531316 is a deficient number, since it is larger than the sum of its proper divisors (2052204884).

2061531316 is a wasteful number, since it uses less digits than its factorization.

2061531316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332083 (or 2332081 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 2061531316 is about 45404.0891991019. The cubic root of 2061531316 is about 1272.7115306643.

Adding to 2061531316 its reverse (6131351602), we get a palindrome (8192882918).

The spelling of 2061531316 in words is "two billion, sixty-one million, five hundred thirty-one thousand, three hundred sixteen".