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13031023142 = 249113269881
BaseRepresentation
bin11000010001011010…
…11010001000100110
31020122011011120012202
430020231122020212
5203141420220032
65553020014502
7640630604054
oct141055321046
936564146182
1013031023142
115587744615
122638091432
1312c89445a7
148b89231d4
1551402dd62
hex308b5a226

13031023142 has 8 divisors (see below), whose sum is σ = 19586345832. Its totient is φ = 6502241200.

The previous prime is 13031023091. The next prime is 13031023147. The reversal of 13031023142 is 24132013031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031023147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6633959 + ... + 6635922.

It is an arithmetic number, because the mean of its divisors is an integer number (2448293229).

Almost surely, 213031023142 is an apocalyptic number.

13031023142 is a deficient number, since it is larger than the sum of its proper divisors (6555322690).

13031023142 is a wasteful number, since it uses less digits than its factorization.

13031023142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13270374.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13031023142 its reverse (24132013031), we get a palindrome (37163036173).

The spelling of 13031023142 in words is "thirteen billion, thirty-one million, twenty-three thousand, one hundred forty-two".

Divisors: 1 2 491 982 13269881 26539762 6515511571 13031023142