31413161 has 16 divisors (see below), whose sum is σ = 36013824. Its totient is φ = 27143424.

The previous prime is 31413149. The next prime is 31413181. The reversal of 31413161 is 16131413.

It is not a de Polignac number, because 31413161 - 2⁶ = 31413097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31413131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67616 + ... + 68078.

It is an arithmetic number, because the mean of its divisors is an integer number (2250864).

Almost surely, 2^31413161 is an apocalyptic number.

It is an amenable number.

31413161 is a deficient number, since it is larger than the sum of its proper divisors (4600663).

31413161 is a wasteful number, since it uses less digits than its factorization.

31413161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800.

The product of its digits is 216, while the sum is 20.

The square root of 31413161 is about 5604.7445080039. The cubic root of 31413161 is about 315.5274977854.

Adding to 31413161 its reverse (16131413), we get a palindrome (47544574).

The spelling of 31413161 in words is "thirty-one million, four hundred thirteen thousand, one hundred sixty-one".