31141143 has 48 divisors (see below), whose sum is σ = 51717120. Its totient is φ = 17884800.

The previous prime is 31141141. The next prime is 31141147. The reversal of 31141143 is 34114113.

It is not a de Polignac number, because 31141143 - 2¹ = 31141141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141141) 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, 223968 + ... + 224106.

It is an arithmetic number, because the mean of its divisors is an integer number (1077440).

Almost surely, 2^31141143 is an apocalyptic number.

31141143 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31141143 is a deficient number, since it is larger than the sum of its proper divisors (20575977).

31141143 is a wasteful number, since it uses less digits than its factorization.

31141143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 257 counting only the distinct ones).

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

The square root of 31141143 is about 5580.4249838162. The cubic root of 31141143 is about 314.6141003761.

Adding to 31141143 its reverse (34114113), we get a palindrome (65255256).

The spelling of 31141143 in words is "thirty-one million, one hundred forty-one thousand, one hundred forty-three".