2231138456 has 32 divisors (see below), whose sum is σ = 4269704400. Its totient is φ = 1092624000.

The previous prime is 2231138447. The next prime is 2231138471. The reversal of 2231138456 is 6548311322.

It is a super-3 number, since 3×2231138456³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258206 + ... + 266706.

Almost surely, 2^2231138456 is an apocalyptic number.

It is an amenable number.

2231138456 is a deficient number, since it is larger than the sum of its proper divisors (2038565944).

2231138456 is a wasteful number, since it uses less digits than its factorization.

2231138456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179 (or 9175 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 2231138456 is about 47234.9283475692. The cubic root of 2231138456 is about 1306.6988451167.

Adding to 2231138456 its reverse (6548311322), we get a palindrome (8779449778).

The spelling of 2231138456 in words is "two billion, two hundred thirty-one million, one hundred thirty-eight thousand, four hundred fifty-six".