2311545442 has 16 divisors (see below), whose sum is σ = 3590705664. Its totient is φ = 1114884000.

The previous prime is 2311545433. The next prime is 2311545449. The reversal of 2311545442 is 2445451132.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (2311545449) 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, 40659 + ... + 79222.

It is an arithmetic number, because the mean of its divisors is an integer number (224419104).

Almost surely, 2^2311545442 is an apocalyptic number.

2311545442 is a deficient number, since it is larger than the sum of its proper divisors (1279160222).

2311545442 is a wasteful number, since it uses less digits than its factorization.

2311545442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120225.

The product of its digits is 19200, while the sum is 31.

The square root of 2311545442 is about 48078.5341082691. The cubic root of 2311545442 is about 1322.2111398449.

Adding to 2311545442 its reverse (2445451132), we get a palindrome (4756996574).

The spelling of 2311545442 in words is "two billion, three hundred eleven million, five hundred forty-five thousand, four hundred forty-two".