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103012131212 = 22792333139729
BaseRepresentation
bin101111111110000000…
…0000110000110001100
3100211220002111110110222
41133330000012012030
53141432101144322
6115153443250512
710304510445104
oct1377400060614
9324802443428
10103012131212
113a761731941
1217b6a679a38
1399388808c3
144db3104204
152a2d8c7e42
hex17fc00618c

103012131212 has 24 divisors (see below), whose sum is σ = 182632699200. Its totient is φ = 50831928576.

The previous prime is 103012131181. The next prime is 103012131217. The reversal of 103012131212 is 212131210301.

It is a super-2 number, since 2×1030121312122 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103012131217) 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, 667364 + ... + 807092.

It is an arithmetic number, because the mean of its divisors is an integer number (7609695800).

Almost surely, 2103012131212 is an apocalyptic number.

It is an amenable number.

103012131212 is a deficient number, since it is larger than the sum of its proper divisors (79620567988).

103012131212 is a wasteful number, since it uses less digits than its factorization.

103012131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142145 (or 142143 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103012131212 its reverse (212131210301), we get a palindrome (315143341513).

The spelling of 103012131212 in words is "one hundred three billion, twelve million, one hundred thirty-one thousand, two hundred twelve".

Divisors: 1 2 4 79 158 316 2333 4666 9332 139729 184307 279458 368614 558916 737228 11038591 22077182 44154364 325987757 651975514 1303951028 25753032803 51506065606 103012131212