31381053 has 16 divisors (see below), whose sum is σ = 45823296. Its totient is φ = 18944640.

The previous prime is 31381043. The next prime is 31381061. The reversal of 31381053 is 35018313.

It is not a de Polignac number, because 31381053 - 2⁹ = 31380541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31381043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7425 + ... + 10857.

It is an arithmetic number, because the mean of its divisors is an integer number (2863956).

Almost surely, 2^31381053 is an apocalyptic number.

31381053 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31381053 is a deficient number, since it is larger than the sum of its proper divisors (14442243).

31381053 is a wasteful number, since it uses less digits than its factorization.

31381053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 31381053 is about 5601.8794167672. The cubic root of 31381053 is about 315.4199588832.

Adding to 31381053 its reverse (35018313), we get a palindrome (66399366).

The spelling of 31381053 in words is "thirty-one million, three hundred eighty-one thousand, fifty-three".