31312141 has 8 divisors (see below), whose sum is σ = 37019520. Its totient is φ = 25913328.

The previous prime is 31312123. The next prime is 31312157. The reversal of 31312141 is 14121313.

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

It is not a de Polignac number, because 31312141 - 2¹³ = 31303949 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 (31312441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76921 + ... + 77326.

It is an arithmetic number, because the mean of its divisors is an integer number (4627440).

Almost surely, 2^31312141 is an apocalyptic number.

It is an amenable number.

31312141 is a deficient number, since it is larger than the sum of its proper divisors (5707379).

31312141 is a wasteful number, since it uses less digits than its factorization.

31312141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154283.

The product of its digits is 72, while the sum is 16.

The square root of 31312141 is about 5595.7252434336. The cubic root of 31312141 is about 315.1889049160.

Adding to 31312141 its reverse (14121313), we get a palindrome (45433454).

The spelling of 31312141 in words is "thirty-one million, three hundred twelve thousand, one hundred forty-one".