31010401 has 2 divisors, whose sum is σ = 31010402. Its totient is φ = 31010400.

The previous prime is 31010393. The next prime is 31010461. The reversal of 31010401 is 10401013.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21150801 + 9859600 = 4599^2 + 3140^2 .

It is a cyclic number.

It is not a de Polignac number, because 31010401 - 2³ = 31010393 is a prime.

It is not a weakly prime, because it can be changed into another prime (31010461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15505200 + 15505201.

It is an arithmetic number, because the mean of its divisors is an integer number (15505201).

Almost surely, 2^31010401 is an apocalyptic number.

It is an amenable number.

31010401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31010401 is an equidigital number, since it uses as much as digits as its factorization.

31010401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 31010401 is about 5568.6983218702. The cubic root of 31010401 is about 314.1731941065.

Adding to 31010401 its reverse (10401013), we get a palindrome (41411414).

The spelling of 31010401 in words is "thirty-one million, ten thousand, four hundred one".