44431402213 has 4 divisors (see below), whose sum is σ = 48470620608. Its totient is φ = 40392183820.

The previous prime is 44431402177. The next prime is 44431402243. The reversal of 44431402213 is 31220413444.

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 44431402213 - 2⁹ = 44431401701 is a prime.

It is a super-2 number, since 2×44431402213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44431402243) 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, 2019609181 + ... + 2019609202.

It is an arithmetic number, because the mean of its divisors is an integer number (12117655152).

Almost surely, 2^44431402213 is an apocalyptic number.

It is an amenable number.

44431402213 is a deficient number, since it is larger than the sum of its proper divisors (4039218395).

44431402213 is a wasteful number, since it uses less digits than its factorization.

44431402213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039218394.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 44431402213 its reverse (31220413444), we get a palindrome (75651815657).

It can be divided in two parts, 44431 and 402213, that added together give a palindrome (446644).

The spelling of 44431402213 in words is "forty-four billion, four hundred thirty-one million, four hundred two thousand, two hundred thirteen".