31413661 has 8 divisors (see below), whose sum is σ = 32011200. Its totient is φ = 30821952.

The previous prime is 31413647. The next prime is 31413677. The reversal of 31413661 is 16631413.

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 31413661 - 2⁹ = 31413149 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 (31413601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10290 + ... + 12988.

It is an arithmetic number, because the mean of its divisors is an integer number (4001400).

Almost surely, 2^31413661 is an apocalyptic number.

It is an amenable number.

31413661 is a deficient number, since it is larger than the sum of its proper divisors (597539).

31413661 is a wasteful number, since it uses less digits than its factorization.

31413661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915.

The product of its digits is 1296, while the sum is 25.

The square root of 31413661 is about 5604.7891128927. The cubic root of 31413661 is about 315.5291718493.

The spelling of 31413661 in words is "thirty-one million, four hundred thirteen thousand, six hundred sixty-one".