31141385 has 16 divisors (see below), whose sum is σ = 40875840. Its totient is φ = 22587840.

The previous prime is 31141373. The next prime is 31141403. The reversal of 31141385 is 58314113.

It is not a de Polignac number, because 31141385 - 2¹⁴ = 31125001 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37151 + ... + 37979.

It is an arithmetic number, because the mean of its divisors is an integer number (2554740).

Almost surely, 2^31141385 is an apocalyptic number.

It is an amenable number.

31141385 is a deficient number, since it is larger than the sum of its proper divisors (9734455).

31141385 is a wasteful number, since it uses less digits than its factorization.

31141385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528.

The product of its digits is 1440, while the sum is 26.

The square root of 31141385 is about 5580.4466667105. The cubic root of 31141385 is about 314.6149153368.

Adding to 31141385 its reverse (58314113), we get a palindrome (89455498).

The spelling of 31141385 in words is "thirty-one million, one hundred forty-one thousand, three hundred eighty-five".