2561316234 has 32 divisors (see below), whose sum is σ = 5185990656. Its totient is φ = 843248640.

The previous prime is 2561316167. The next prime is 2561316293. The reversal of 2561316234 is 4326131652.

It is a junction number, because it is equal to n+sod(n) for n = 2561316195 and 2561316204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298999 + ... + 307445.

It is an arithmetic number, because the mean of its divisors is an integer number (162062208).

Almost surely, 2^2561316234 is an apocalyptic number.

2561316234 is an abundant number, since it is smaller than the sum of its proper divisors (2624674422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561316234 is a wasteful number, since it uses less digits than its factorization.

2561316234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070.

The product of its digits is 25920, while the sum is 33.

The square root of 2561316234 is about 50609.4480704937. The cubic root of 2561316234 is about 1368.2151680549.

Adding to 2561316234 its reverse (4326131652), we get a palindrome (6887447886).

The spelling of 2561316234 in words is "two billion, five hundred sixty-one million, three hundred sixteen thousand, two hundred thirty-four".