100311222031 has 4 divisors (see below), whose sum is σ = 102644041192. Its totient is φ = 97978402872.

The previous prime is 100311222013. The next prime is 100311222097. The reversal of 100311222031 is 130222113001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100311222031 - 2¹⁷ = 100311090959 is a prime.

It is a super-2 number, since 2×100311222031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100311221996 and 100311222014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100311222631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166409516 + ... + 1166409601.

It is an arithmetic number, because the mean of its divisors is an integer number (25661010298).

Almost surely, 2^100311222031 is an apocalyptic number.

100311222031 is a deficient number, since it is larger than the sum of its proper divisors (2332819161).

100311222031 is an equidigital number, since it uses as much as digits as its factorization.

100311222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332819160.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 100311222031 its reverse (130222113001), we get a palindrome (230533335032).

The spelling of 100311222031 in words is "one hundred billion, three hundred eleven million, two hundred twenty-two thousand, thirty-one".