31144244231 has 8 divisors (see below), whose sum is σ = 32785036800. Its totient is φ = 29503613880.

The previous prime is 31144244191. The next prime is 31144244249. The reversal of 31144244231 is 13244244113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31144244231 - 2¹⁴ = 31144227847 is a prime.

It is a super-2 number, since 2×31144244231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31144244194 and 31144244203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144244291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707690 + ... + 750408.

It is an arithmetic number, because the mean of its divisors is an integer number (4098129600).

Almost surely, 2^31144244231 is an apocalyptic number.

31144244231 is a deficient number, since it is larger than the sum of its proper divisors (1640792569).

31144244231 is a wasteful number, since it uses less digits than its factorization.

31144244231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81109.

The product of its digits is 9216, while the sum is 29.

Adding to 31144244231 its reverse (13244244113), we get a palindrome (44388488344).

The spelling of 31144244231 in words is "thirty-one billion, one hundred forty-four million, two hundred forty-four thousand, two hundred thirty-one".