2311123534 has 4 divisors (see below), whose sum is σ = 3466685304. Its totient is φ = 1155561766.

The previous prime is 2311123523. The next prime is 2311123541. The reversal of 2311123534 is 4353211132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2311123499 and 2311123508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577780882 + ... + 577780885.

It is an arithmetic number, because the mean of its divisors is an integer number (866671326).

Almost surely, 2^2311123534 is an apocalyptic number.

2311123534 is a deficient number, since it is larger than the sum of its proper divisors (1155561770).

2311123534 is a wasteful number, since it uses less digits than its factorization.

2311123534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155561769.

The product of its digits is 2160, while the sum is 25.

The square root of 2311123534 is about 48074.1462118674. The cubic root of 2311123534 is about 1322.1306907233.

Adding to 2311123534 its reverse (4353211132), we get a palindrome (6664334666).

The spelling of 2311123534 in words is "two billion, three hundred eleven million, one hundred twenty-three thousand, five hundred thirty-four".