31321144113 has 8 divisors (see below), whose sum is σ = 47727457728. Its totient is φ = 17897796624.

The previous prime is 31321144109. The next prime is 31321144117. The reversal of 31321144113 is 31144112313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31321144109) and next prime (31321144117).

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

It is not a de Polignac number, because 31321144113 - 2² = 31321144109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31321144117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745741506 + ... + 745741547.

It is an arithmetic number, because the mean of its divisors is an integer number (5965932216).

Almost surely, 2^31321144113 is an apocalyptic number.

It is an amenable number.

31321144113 is a deficient number, since it is larger than the sum of its proper divisors (16406313615).

31321144113 is a wasteful number, since it uses less digits than its factorization.

31321144113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491483063.

The product of its digits is 864, while the sum is 24.

Adding to 31321144113 its reverse (31144112313), we get a palindrome (62465256426).

The spelling of 31321144113 in words is "thirty-one billion, three hundred twenty-one million, one hundred forty-four thousand, one hundred thirteen".