44231381 has 4 divisors (see below), whose sum is σ = 44429952. Its totient is φ = 44032812.

The previous prime is 44231377. The next prime is 44231387. The reversal of 44231381 is 18313244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44231381 - 2² = 44231377 is a prime.

It is a super-2 number, since 2×44231381² = 3912830130334322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44231381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44231387) 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, 98951 + ... + 99396.

It is an arithmetic number, because the mean of its divisors is an integer number (11107488).

Almost surely, 2^44231381 is an apocalyptic number.

It is an amenable number.

44231381 is a deficient number, since it is larger than the sum of its proper divisors (198571).

44231381 is a wasteful number, since it uses less digits than its factorization.

44231381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198570.

The product of its digits is 2304, while the sum is 26.

The square root of 44231381 is about 6650.6677108393. The cubic root of 44231381 is about 353.6525818976.

The spelling of 44231381 in words is "forty-four million, two hundred thirty-one thousand, three hundred eighty-one".