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1100010123031 = 7720611424771
BaseRepresentation
bin10000000000011101101…
…101100110111100010111
310220011022121010001220211
4100000131231212330113
5121010310042414111
62201200534310251
7142321163525521
oct20003555467427
93804277101824
101100010123031
1139456a045636
121592331b8387
137c965c10b31
143b352980a11
151d931800521
hex1001db66f17

1100010123031 has 4 divisors (see below), whose sum is σ = 1100012319864. Its totient is φ = 1100007926200.

The previous prime is 1100010122999. The next prime is 1100010123049. The reversal of 1100010123031 is 1303210100011.

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 1100010123031 - 25 = 1100010122999 is a prime.

It is a super-2 number, since 2×11000101230312 (a number of 25 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 (1100010123931) 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, 59676 + ... + 1484446.

It is an arithmetic number, because the mean of its divisors is an integer number (275003079966).

Almost surely, 21100010123031 is an apocalyptic number.

1100010123031 is a deficient number, since it is larger than the sum of its proper divisors (2196833).

1100010123031 is an equidigital number, since it uses as much as digits as its factorization.

1100010123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196832.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 1100010123031 its reverse (1303210100011), we get a palindrome (2403220223042).

The spelling of 1100010123031 in words is "one trillion, one hundred billion, ten million, one hundred twenty-three thousand, thirty-one".

Divisors: 1 772061 1424771 1100010123031