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BaseRepresentation
bin10011000001011001…
…010011111011111011
31221201102022110120002
4103001121103323323
5313312133212011
613214412023215
71322065306010
oct230131237373
957642273502
1020424507131
118731113566
123b60161b0b
131c06619ca2
14dba829707
157e8170c3b
hex4c1653efb

20424507131 has 8 divisors (see below), whose sum is σ = 23343212544. Its totient is φ = 17506031400.

The previous prime is 20424507119. The next prime is 20424507167. The reversal of 20424507131 is 13170542402.

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 20424507131 - 214 = 20424490747 is a prime.

It is a super-2 number, since 2×204245071312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20424507094 and 20424507103.

It is not an unprimeable number, because it can be changed into a prime (20424507101) 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, 227216 + ... + 304098.

It is an arithmetic number, because the mean of its divisors is an integer number (2917901568).

Almost surely, 220424507131 is an apocalyptic number.

20424507131 is a deficient number, since it is larger than the sum of its proper divisors (2918705413).

20424507131 is an equidigital number, since it uses as much as digits as its factorization.

20424507131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114841.

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 20424507131 in words is "twenty billion, four hundred twenty-four million, five hundred seven thousand, one hundred thirty-one".