31322401 has 16 divisors (see below), whose sum is σ = 35280000. Its totient is φ = 27561600.

The previous prime is 31322371. The next prime is 31322429. The reversal of 31322401 is 10422313.

It is a happy number.

It is not a de Polignac number, because 31322401 - 2⁷ = 31322273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31322441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89575 + ... + 89923.

It is an arithmetic number, because the mean of its divisors is an integer number (2205000).

Almost surely, 2^31322401 is an apocalyptic number.

It is an amenable number.

31322401 is a deficient number, since it is larger than the sum of its proper divisors (3957599).

31322401 is a wasteful number, since it uses less digits than its factorization.

31322401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31322401 is about 5596.6419395920. The cubic root of 31322401 is about 315.2233269742.

Adding to 31322401 its reverse (10422313), we get a palindrome (41744714).

The spelling of 31322401 in words is "thirty-one million, three hundred twenty-two thousand, four hundred one".