31163201 has 8 divisors (see below), whose sum is σ = 31560000. Its totient is φ = 30769200.

The previous prime is 31163191. The next prime is 31163207. The reversal of 31163201 is 10236113.

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 31163201 - 2²² = 26968897 is a prime.

It is a super-3 number, since 3×31163201³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31163201.

It is not an unprimeable number, because it can be changed into a prime (31163207) 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, 29126 + ... + 30176.

It is an arithmetic number, because the mean of its divisors is an integer number (3945000).

Almost surely, 2^31163201 is an apocalyptic number.

It is an amenable number.

31163201 is a deficient number, since it is larger than the sum of its proper divisors (396799).

31163201 is a wasteful number, since it uses less digits than its factorization.

31163201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 31163201 is about 5582.4010067354. The cubic root of 31163201 is about 314.6883656864.

Adding to 31163201 its reverse (10236113), we get a palindrome (41399314).

The spelling of 31163201 in words is "thirty-one million, one hundred sixty-three thousand, two hundred one".