31411121 has 12 divisors (see below), whose sum is σ = 38136768. Its totient is φ = 25338432.

The previous prime is 31411117. The next prime is 31411129. The reversal of 31411121 is 12111413.

It is not a de Polignac number, because 31411121 - 2² = 31411117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31411096 and 31411105.

It is not an unprimeable number, because it can be changed into a prime (31411129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5741 + ... + 9786.

It is an arithmetic number, because the mean of its divisors is an integer number (3178064).

Almost surely, 2^31411121 is an apocalyptic number.

It is an amenable number.

31411121 is a deficient number, since it is larger than the sum of its proper divisors (6725647).

31411121 is a wasteful number, since it uses less digits than its factorization.

31411121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15568 (or 15551 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 31411121 is about 5604.5625163790. The cubic root of 31411121 is about 315.5206674208.

Adding to 31411121 its reverse (12111413), we get a palindrome (43522534).

The spelling of 31411121 in words is "thirty-one million, four hundred eleven thousand, one hundred twenty-one".