31010043401 has 2 divisors, whose sum is σ = 31010043402. Its totient is φ = 31010043400.

The previous prime is 31010043391. The next prime is 31010043439. The reversal of 31010043401 is 10434001013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29481233401 + 1528810000 = 171701^2 + 39100^2 .

It is an emirp because it is prime and its reverse (10434001013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31010043401 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31010043401.

It is not a weakly prime, because it can be changed into another prime (31010043481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15505021700 + 15505021701.

It is an arithmetic number, because the mean of its divisors is an integer number (15505021701).

Almost surely, 2^31010043401 is an apocalyptic number.

It is an amenable number.

31010043401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31010043401 is an equidigital number, since it uses as much as digits as its factorization.

31010043401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31010043401 its reverse (10434001013), we get a palindrome (41444044414).

The spelling of 31010043401 in words is "thirty-one billion, ten million, forty-three thousand, four hundred one".