31144113 has 48 divisors (see below), whose sum is σ = 60418176. Its totient is φ = 14929920.

The previous prime is 31144111. The next prime is 31144147.

31144113 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31144113 - 2¹ = 31144111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31144111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7281 + ... + 10737.

It is an arithmetic number, because the mean of its divisors is an integer number (1258712).

Almost surely, 2^31144113 is an apocalyptic number.

31144113 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31144113 is a deficient number, since it is larger than the sum of its proper divisors (29274063).

31144113 is a wasteful number, since it uses less digits than its factorization.

31144113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494 (or 3491 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 31144113 is about 5580.6910862365. The cubic root of 31144113 is about 314.6241018735.

It can be divided in two parts, 3114 and 4113, that added together give a palindrome (7227).

The spelling of 31144113 in words is "thirty-one million, one hundred forty-four thousand, one hundred thirteen".