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2020131031 = 59167421487
BaseRepresentation
bin111100001101000…
…1100000011010111
312012210020021210211
41320122030003113
513114123143111
6532242230251
7101026554562
oct17032140327
95183207724
102020131031
11947347386
12484655387
132626a5309
141524194d9
15bc53c521
hex7868c0d7

2020131031 has 16 divisors (see below), whose sum is σ = 2075834880. Its totient is φ = 1965267360.

The previous prime is 2020131011. The next prime is 2020131037. The reversal of 2020131031 is 1301310202.

It is a cyclic number.

It is not a de Polignac number, because 2020131031 - 25 = 2020130999 is a prime.

It is a super-2 number, since 2×20201310312 = 8161858764818245922, which 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 (2020131037) 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, 4147870 + ... + 4148356.

It is an arithmetic number, because the mean of its divisors is an integer number (129739680).

Almost surely, 22020131031 is an apocalyptic number.

2020131031 is a deficient number, since it is larger than the sum of its proper divisors (55703849).

2020131031 is a wasteful number, since it uses less digits than its factorization.

2020131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2020131031 is about 44945.8677855929. The cubic root of 2020131031 is about 1264.1341971414.

Adding to 2020131031 its reverse (1301310202), we get a palindrome (3321441233).

The spelling of 2020131031 in words is "two billion, twenty million, one hundred thirty-one thousand, thirty-one".

Divisors: 1 59 167 421 487 9853 24839 28733 70307 81329 205027 4148113 4798411 12096593 34239509 2020131031