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101021303031 = 31114832064229
BaseRepresentation
bin101111000010101010…
…1101100000011110111
3100122202100101220121220
41132011111230003313
53123342423144111
6114224125041423
710204254623235
oct1360525540367
9318670356556
10101021303031
113992a98a1a0
12176b39b6273
1396ac29816c
144c64955955
152963c27e06
hex178556c0f7

101021303031 has 16 divisors (see below), whose sum is σ = 147039231360. Its totient is φ = 61183717920.

The previous prime is 101021303023. The next prime is 101021303077. The reversal of 101021303031 is 130303120101.

It is not a de Polignac number, because 101021303031 - 23 = 101021303023 is a prime.

It is a super-2 number, since 2×1010213030312 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101021303031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021303431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983176 + ... + 1081053.

It is an arithmetic number, because the mean of its divisors is an integer number (9189951960).

Almost surely, 2101021303031 is an apocalyptic number.

101021303031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101021303031 is a deficient number, since it is larger than the sum of its proper divisors (46017928329).

101021303031 is a wasteful number, since it uses less digits than its factorization.

101021303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065726.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 101021303031 its reverse (130303120101), we get a palindrome (231324423132).

The spelling of 101021303031 in words is "one hundred one billion, twenty-one million, three hundred three thousand, thirty-one".

Divisors: 1 3 11 33 1483 4449 16313 48939 2064229 6192687 22706519 68119557 3061251607 9183754821 33673767677 101021303031