31122201 has 8 divisors (see below), whose sum is σ = 45268704. Its totient is φ = 18861920.

The previous prime is 31122173. The next prime is 31122229. The reversal of 31122201 is 10222113.

It is an interprime number because it is at equal distance from previous prime (31122173) and next prime (31122229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31122201 - 2⁷ = 31122073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31122271) 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, 471516 + ... + 471581.

It is an arithmetic number, because the mean of its divisors is an integer number (5658588).

Almost surely, 2^31122201 is an apocalyptic number.

It is an amenable number.

31122201 is a deficient number, since it is larger than the sum of its proper divisors (14146503).

31122201 is a wasteful number, since it uses less digits than its factorization.

31122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943111.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 31122201 is about 5578.7275430872. The cubic root of 31122201 is about 314.5502980831.

Adding to 31122201 its reverse (10222113), we get a palindrome (41344314).

The spelling of 31122201 in words is "thirty-one million, one hundred twenty-two thousand, two hundred one".