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101222131031 = 747930188527
BaseRepresentation
bin101111001000101001…
…1110010010101010111
3100200021100022000211222
41132101103302111113
53124300331143111
6114300101320555
710212243626510
oct1362123622527
9320240260758
10101222131031
1139a2328824a
121774b10615b
139711a822b8
144c834b1a07
1529766977db
hex17914f2557

101222131031 has 8 divisors (see below), whose sum is σ = 115923947520. Its totient is φ = 86580692568.

The previous prime is 101222130959. The next prime is 101222131091. The reversal of 101222131031 is 130131222101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-101222131031 is a prime.

It is a super-2 number, since 2×1012221310312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101222131091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15090911 + ... + 15097616.

It is an arithmetic number, because the mean of its divisors is an integer number (14490493440).

Almost surely, 2101222131031 is an apocalyptic number.

101222131031 is a deficient number, since it is larger than the sum of its proper divisors (14701816489).

101222131031 is an equidigital number, since it uses as much as digits as its factorization.

101222131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30189013.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101222131031 its reverse (130131222101), we get a palindrome (231353353132).

The spelling of 101222131031 in words is "one hundred one billion, two hundred twenty-two million, one hundred thirty-one thousand, thirty-one".

Divisors: 1 7 479 3353 30188527 211319689 14460304433 101222131031