2131223242 has 8 divisors (see below), whose sum is σ = 3198013632. Its totient is φ = 1065218700.

The previous prime is 2131223239. The next prime is 2131223249. The reversal of 2131223242 is 2423221312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2131223242² = 9084225014481981128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2131223249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189634 + ... + 200557.

It is an arithmetic number, because the mean of its divisors is an integer number (399751704).

Almost surely, 2^2131223242 is an apocalyptic number.

2131223242 is a deficient number, since it is larger than the sum of its proper divisors (1066790390).

2131223242 is a wasteful number, since it uses less digits than its factorization.

2131223242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392924.

The product of its digits is 1152, while the sum is 22.

The square root of 2131223242 is about 46165.1734752508. The cubic root of 2131223242 is about 1286.8946080483.

Adding to 2131223242 its reverse (2423221312), we get a palindrome (4554444554).

The spelling of 2131223242 in words is "two billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred forty-two".