31053891 has 8 divisors (see below), whose sum is σ = 45169344. Its totient is φ = 18820520.

The previous prime is 31053889. The next prime is 31053899. The reversal of 31053891 is 19835013.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31053891 - 2¹ = 31053889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31053899) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 470481 + ... + 470546.

It is an arithmetic number, because the mean of its divisors is an integer number (5646168).

Almost surely, 2^31053891 is an apocalyptic number.

31053891 is a deficient number, since it is larger than the sum of its proper divisors (14115453).

31053891 is a wasteful number, since it uses less digits than its factorization.

31053891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941041.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 31053891 is about 5572.6018160281. The cubic root of 31053891 is about 314.3199944210.

It can be divided in two parts, 3105 and 3891, that added together give a palindrome (6996).

The spelling of 31053891 in words is "thirty-one million, fifty-three thousand, eight hundred ninety-one".