31420444401 has 10 divisors (see below), whose sum is σ = 46936713362. Its totient is φ = 20946962880.

The previous prime is 31420444309. The next prime is 31420444403. The reversal of 31420444401 is 10444402413.

31420444401 is a `hidden beast` number, since 3 + 14 + 204 + 4 + 440 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 31400194401 + 20250000 = 177201^2 + 4500^2 .

It is not a de Polignac number, because 31420444401 - 2⁷ = 31420444273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31420444403) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 193953280 + ... + 193953441.

Almost surely, 2^31420444401 is an apocalyptic number.

It is an amenable number.

31420444401 is a deficient number, since it is larger than the sum of its proper divisors (15516268961).

31420444401 is an equidigital number, since it uses as much as digits as its factorization.

31420444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387906733 (or 387906724 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 31420444401 its reverse (10444402413), we get a palindrome (41864846814).

The spelling of 31420444401 in words is "thirty-one billion, four hundred twenty million, four hundred forty-four thousand, four hundred one".