31441157 has 16 divisors (see below), whose sum is σ = 35783232. Its totient is φ = 27371520.

The previous prime is 31441153. The next prime is 31441217. The reversal of 31441157 is 75114413.

It is not a de Polignac number, because 31441157 - 2² = 31441153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31441153) 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 15 ways as a sum of consecutive naturals, for example, 26693 + ... + 27845.

It is an arithmetic number, because the mean of its divisors is an integer number (2236452).

Almost surely, 2^31441157 is an apocalyptic number.

31441157 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

31441157 is a deficient number, since it is larger than the sum of its proper divisors (4342075).

31441157 is a wasteful number, since it uses less digits than its factorization.

31441157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268.

The product of its digits is 1680, while the sum is 26.

The square root of 31441157 is about 5607.2414786595. The cubic root of 31441157 is about 315.6212046336.

The spelling of 31441157 in words is "thirty-one million, four hundred forty-one thousand, one hundred fifty-seven".