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31023101022 = 2312740712731
BaseRepresentation
bin11100111001000111…
…101111010001011110
32222002001102211010120
4130321013233101132
51002013403213042
622130220415410
72145532002444
oct347107572136
988061384116
1031023101022
111217a805a71
1260196a7566
132c05330014
14170428ab94
15c1886edec
hex7391ef45e

31023101022 has 16 divisors (see below), whose sum is σ = 62534756352. Its totient is φ = 10259607960.

The previous prime is 31023101009. The next prime is 31023101059. The reversal of 31023101022 is 22010132013.

It is a junction number, because it is equal to n+sod(n) for n = 31023100992 and 31023101010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20355604 + ... + 20357127.

It is an arithmetic number, because the mean of its divisors is an integer number (3908422272).

Almost surely, 231023101022 is an apocalyptic number.

31023101022 is an abundant number, since it is smaller than the sum of its proper divisors (31511655330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31023101022 is a wasteful number, since it uses less digits than its factorization.

31023101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40712863.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31023101022 its reverse (22010132013), we get a palindrome (53033233035).

The spelling of 31023101022 in words is "thirty-one billion, twenty-three million, one hundred one thousand, twenty-two".

Divisors: 1 2 3 6 127 254 381 762 40712731 81425462 122138193 244276386 5170516837 10341033674 15511550511 31023101022