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102031022131 = 238949844173
BaseRepresentation
bin101111100000110000…
…1011101100000110011
3100202100201100221211121
41133001201131200303
53132424420202011
6114512234523111
710241265243553
oct1370141354063
9322321327747
10102031022131
113a2a8941095
1217935b96497
13981052909c
144d1cab3163
1529c26c8e71
hex17c185d833

102031022131 has 8 divisors (see below), whose sum is σ = 107663415840. Its totient is φ = 96498316992.

The previous prime is 102031022129. The next prime is 102031022179. The reversal of 102031022131 is 131220130201.

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

It is a cyclic number.

It is not a de Polignac number, because 102031022131 - 21 = 102031022129 is a prime.

It is a super-2 number, since 2×1020310221312 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102031022111) 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, 24920040 + ... + 24924133.

It is an arithmetic number, because the mean of its divisors is an integer number (13457926980).

Almost surely, 2102031022131 is an apocalyptic number.

102031022131 is a deficient number, since it is larger than the sum of its proper divisors (5632393709).

102031022131 is an equidigital number, since it uses as much as digits as its factorization.

102031022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49844285.

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

Adding to 102031022131 its reverse (131220130201), we get a palindrome (233251152332).

It can be divided in two parts, 1020310 and 22131, that added together give a square (1042441 = 10212).

The spelling of 102031022131 in words is "one hundred two billion, thirty-one million, twenty-two thousand, one hundred thirty-one".

Divisors: 1 23 89 2047 49844173 1146415979 4436131397 102031022131