31042201 has 4 divisors (see below), whose sum is σ = 31568400. Its totient is φ = 30516004.

The previous prime is 31042199. The next prime is 31042217. The reversal of 31042201 is 10224013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31042201 - 2¹ = 31042199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31042241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263011 + ... + 263128.

It is an arithmetic number, because the mean of its divisors is an integer number (7892100).

Almost surely, 2^31042201 is an apocalyptic number.

It is an amenable number.

31042201 is a deficient number, since it is larger than the sum of its proper divisors (526199).

31042201 is an equidigital number, since it uses as much as digits as its factorization.

31042201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526198.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 31042201 is about 5571.5528356106. The cubic root of 31042201 is about 314.2805483507.

Adding to 31042201 its reverse (10224013), we get a palindrome (41266214).

The spelling of 31042201 in words is "thirty-one million, forty-two thousand, two hundred one".