31100423401 has 2 divisors, whose sum is σ = 31100423402. Its totient is φ = 31100423400.

The previous prime is 31100423377. The next prime is 31100423413. The reversal of 31100423401 is 10432400113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26316626176 + 4783797225 = 162224^2 + 69165^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100423401 - 2⁷ = 31100423273 is a prime.

It is not a weakly prime, because it can be changed into another prime (31100429401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550211700 + 15550211701.

It is an arithmetic number, because the mean of its divisors is an integer number (15550211701).

Almost surely, 2^31100423401 is an apocalyptic number.

It is an amenable number.

31100423401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100423401 is an equidigital number, since it uses as much as digits as its factorization.

31100423401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31100423401 its reverse (10432400113), we get a palindrome (41532823514).

The spelling of 31100423401 in words is "thirty-one billion, one hundred million, four hundred twenty-three thousand, four hundred one".