2231655442 has 4 divisors (see below), whose sum is σ = 3347483166. Its totient is φ = 1115827720.

The previous prime is 2231655403. The next prime is 2231655443. The reversal of 2231655442 is 2445561322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2445561322 = 2 ⋅1222780661.

It can be written as a sum of positive squares in only one way, i.e., 2227934401 + 3721041 = 47201^2 + 1929^2 .

It is a super-3 number, since 3×2231655442³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231655398 and 2231655407.

It is not an unprimeable number, because it can be changed into a prime (2231655443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557913859 + ... + 557913862.

Almost surely, 2^2231655442 is an apocalyptic number.

2231655442 is a deficient number, since it is larger than the sum of its proper divisors (1115827724).

2231655442 is a wasteful number, since it uses less digits than its factorization.

2231655442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115827723.

The product of its digits is 57600, while the sum is 34.

The square root of 2231655442 is about 47240.4005275146. The cubic root of 2231655442 is about 1306.7997641245.

The spelling of 2231655442 in words is "two billion, two hundred thirty-one million, six hundred fifty-five thousand, four hundred forty-two".