101211323031 has 48 divisors (see below), whose sum is σ = 184794302784. Its totient is φ = 51943306752.

The previous prime is 101211323011. The next prime is 101211323077. The reversal of 101211323031 is 130323112101.

101211323031 is a `hidden beast` number, since 101 + 211 + 323 + 0 + 31 = 666.

It is not a de Polignac number, because 101211323031 - 2⁵ = 101211322999 is a prime.

It is a super-2 number, since 2×101211323031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101211322995 and 101211323013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211323011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1639686 + ... + 1700291.

It is an arithmetic number, because the mean of its divisors is an integer number (3849881308).

Almost surely, 2^101211323031 is an apocalyptic number.

101211323031 is a deficient number, since it is larger than the sum of its proper divisors (83582979753).

101211323031 is a wasteful number, since it uses less digits than its factorization.

101211323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340040 (or 3340037 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 101211323031 its reverse (130323112101), we get a palindrome (231534435132).

The spelling of 101211323031 in words is "one hundred one billion, two hundred eleven million, three hundred twenty-three thousand, thirty-one".