2311440534 has 48 divisors (see below), whose sum is σ = 5579355600. Its totient is φ = 686685888.

The previous prime is 2311440517. The next prime is 2311440541. The reversal of 2311440534 is 4350441132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2311440498 and 2311440507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163524 + ... + 177095.

It is an arithmetic number, because the mean of its divisors is an integer number (116236575).

Almost surely, 2^2311440534 is an apocalyptic number.

2311440534 is an abundant number, since it is smaller than the sum of its proper divisors (3267915066).

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

2311440534 is a wasteful number, since it uses less digits than its factorization.

2311440534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340669 (or 340666 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2311440534 is about 48077.4430892492. The cubic root of 2311440534 is about 1322.1911369755.

Adding to 2311440534 its reverse (4350441132), we get a palindrome (6661881666).

The spelling of 2311440534 in words is "two billion, three hundred eleven million, four hundred forty thousand, five hundred thirty-four".