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BaseRepresentation
bin1001000111001111101000…
…10010111010010100101111
32121221211001111021012122010
410203213310102322110233
510111314131441042111
6110342145435052303
74135564611131400
oct443476422722457
977854044235563
1020040121034031
116426a709737aa
1222b7aabba1093
13b24a10462a67
144d3d389339a7
1524b4522c9aa6
hex1239f44ba52f

20040121034031 has 24 divisors (see below), whose sum is σ = 31119684140160. Its totient is φ = 11437848679152.

The previous prime is 20040121034027. The next prime is 20040121034119. The reversal of 20040121034031 is 13043012104002.

It is not a de Polignac number, because 20040121034031 - 22 = 20040121034027 is a prime.

It is a super-2 number, since 2×200401210340312 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20040121033989 and 20040121034007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040121034831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81120621 + ... + 81367286.

It is an arithmetic number, because the mean of its divisors is an integer number (1296653505840).

Almost surely, 220040121034031 is an apocalyptic number.

20040121034031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20040121034031 is a deficient number, since it is larger than the sum of its proper divisors (11079563106129).

20040121034031 is a wasteful number, since it uses less digits than its factorization.

20040121034031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162488763 (or 162488756 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20040121034031 its reverse (13043012104002), we get a palindrome (33083133138033).

The spelling of 20040121034031 in words is "twenty trillion, forty billion, one hundred twenty-one million, thirty-four thousand, thirty-one".