31628041 has 8 divisors (see below), whose sum is σ = 33599880. Its totient is φ = 29668608.

The previous prime is 31628021. The next prime is 31628089. The reversal of 31628041 is 14082613.

It can be written as a sum of positive squares in 4 ways, for example, as 32400 + 31595641 = 180^2 + 5621^2 .

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 31628041 - 2¹³ = 31619849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31627997 and 31628015.

It is not an unprimeable number, because it can be changed into a prime (31628011) 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, 2455 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (4199985).

Almost surely, 2^31628041 is an apocalyptic number.

It is an amenable number.

31628041 is a deficient number, since it is larger than the sum of its proper divisors (1971839).

31628041 is a wasteful number, since it uses less digits than its factorization.

31628041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 31628041 is about 5623.8813109809. The cubic root of 31628041 is about 316.2453130375.

The spelling of 31628041 in words is "thirty-one million, six hundred twenty-eight thousand, forty-one".