44311431213 has 128 divisors (see below), whose sum is σ = 78884352000. Its totient is φ = 24056766720.

The previous prime is 44311431179. The next prime is 44311431233. The reversal of 44311431213 is 31213411344.

44311431213 is a `hidden beast` number, since 4 + 4 + 3 + 11 + 431 + 213 = 666.

It is not a de Polignac number, because 44311431213 - 2¹² = 44311427117 is a prime.

It is a super-2 number, since 2×44311431213² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44311431233) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 87055603 + ... + 87056111.

It is an arithmetic number, because the mean of its divisors is an integer number (616284000).

Almost surely, 2^44311431213 is an apocalyptic number.

It is an amenable number.

44311431213 is a deficient number, since it is larger than the sum of its proper divisors (34572920787).

44311431213 is a wasteful number, since it uses less digits than its factorization.

44311431213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 826 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 44311431213 its reverse (31213411344), we get a palindrome (75524842557).

The spelling of 44311431213 in words is "forty-four billion, three hundred eleven million, four hundred thirty-one thousand, two hundred thirteen".