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20203131034031 = 118959720498993
BaseRepresentation
bin1001001011111111010000…
…11100101101100110101111
32122112101210221100012101112
410211333220130231212233
510122002003021042111
6110545105033102235
74153425264226661
oct445775034554657
978471727305345
1020203131034031
11648a110857470
12232360385797b
13b371bb1a576a
144dbba00d4531
152507e3133e8b
hex125fe872d9af

20203131034031 has 8 divisors (see below), whose sum is σ = 22040026372944. Its totient is φ = 18366276872320.

The previous prime is 20203131034001. The next prime is 20203131034049. The reversal of 20203131034031 is 13043013130202.

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 20203131034031 - 226 = 20203063925167 is a prime.

It is a super-2 number, since 2×202031310340312 (a number of 27 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 = 20203131033988 and 20203131034006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203131034001) 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, 9263930 + ... + 11235063.

It is an arithmetic number, because the mean of its divisors is an integer number (2755003296618).

Almost surely, 220203131034031 is an apocalyptic number.

20203131034031 is a deficient number, since it is larger than the sum of its proper divisors (1836895338913).

20203131034031 is a wasteful number, since it uses less digits than its factorization.

20203131034031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588601.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20203131034031 its reverse (13043013130202), we get a palindrome (33246144164233).

The spelling of 20203131034031 in words is "twenty trillion, two hundred three billion, one hundred thirty-one million, thirty-four thousand, thirty-one".

Divisors: 1 11 89597 985567 20498993 225488923 1836648275821 20203131034031