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20310010003031 = 731972063467713
BaseRepresentation
bin1001001111000110010101…
…11011100111111001010111
32122220121200111222101002212
410213203022323213321113
510130224400030044111
6111110142332224035
74164230660410460
oct447431273477127
978817614871085
1020310010003031
116520477190811
12234027130b01b
13b442c1bc2b58
1450301c9a7d67
1525349b22b98b
hex1278caee7e57

20310010003031 has 32 divisors (see below), whose sum is σ = 24218994229248. Its totient is φ = 16665214648320.

The previous prime is 20310010003021. The next prime is 20310010003037. The reversal of 20310010003031 is 13030001001302.

It is not a de Polignac number, because 20310010003031 - 214 = 20310009986647 is a prime.

It is a super-2 number, since 2×203100100030312 (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20310010002997 and 20310010003015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310010003037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43190231 + ... + 43657943.

It is an arithmetic number, because the mean of its divisors is an integer number (756843569664).

Almost surely, 220310010003031 is an apocalyptic number.

20310010003031 is a deficient number, since it is larger than the sum of its proper divisors (3908984226217).

20310010003031 is a wasteful number, since it uses less digits than its factorization.

20310010003031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469911.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20310010003031 its reverse (13030001001302), we get a palindrome (33340011004333).

The spelling of 20310010003031 in words is "twenty trillion, three hundred ten billion, ten million, three thousand, thirty-one".

Divisors: 1 7 31 97 217 679 2063 3007 14441 21049 63953 200111 447671 467713 1400777 3273991 6203441 14499103 43424087 45368161 101493721 317577127 964891919 1406412991 6754243433 9844890937 29911649489 93594516143 209381546423 655161613001 2901430000433 20310010003031