100203220420031 has 2 divisors, whose sum is σ = 100203220420032. Its totient is φ = 100203220420030.

The previous prime is 100203220420021. The next prime is 100203220420063. The reversal of 100203220420031 is 130024022302001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100203220420031 - 2²² = 100203216225727 is a prime.

It is a super-2 number, since 2×100203220420031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100203220419985 and 100203220420012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100203220420021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50101610210015 + 50101610210016.

It is an arithmetic number, because the mean of its divisors is an integer number (50101610210016).

Almost surely, 2^{100203220420031} is an apocalyptic number.

100203220420031 is a deficient number, since it is larger than the sum of its proper divisors (1).

100203220420031 is an equidigital number, since it uses as much as digits as its factorization.

100203220420031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 100203220420031 its reverse (130024022302001), we get a palindrome (230227242722032).

The spelling of 100203220420031 in words is "one hundred trillion, two hundred three billion, two hundred twenty million, four hundred twenty thousand, thirty-one".