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31002200942 = 2139911080129
BaseRepresentation
bin11100110111111000…
…000000101101101110
32222000121002222121112
4130313320000231232
51001443030412232
622124152432022
72145156234326
oct346770005556
988017088545
1031002200942
1112169a30479
1260126a8612
132c00bc2ccb
1417015aa286
15c16ae24b2
hex737e00b6e

31002200942 has 8 divisors (see below), whose sum is σ = 46536546000. Its totient is φ = 15490018944.

The previous prime is 31002200941. The next prime is 31002201007. The reversal of 31002200942 is 24900220013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×310022009422 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002200941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5537267 + ... + 5542862.

It is an arithmetic number, because the mean of its divisors is an integer number (5817068250).

Almost surely, 231002200942 is an apocalyptic number.

31002200942 is a deficient number, since it is larger than the sum of its proper divisors (15534345058).

31002200942 is a wasteful number, since it uses less digits than its factorization.

31002200942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11081530.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31002200942 its reverse (24900220013), we get a palindrome (55902420955).

The spelling of 31002200942 in words is "thirty-one billion, two million, two hundred thousand, nine hundred forty-two".

Divisors: 1 2 1399 2798 11080129 22160258 15501100471 31002200942