Search a number
-
+
13122312142 = 2157373911177
BaseRepresentation
bin11000011100010011…
…01001011111001110
31020212111221112011211
430032021221133032
5203333302442032
610010040405034
7643116545542
oct141611513716
936774845154
1013122312142
115624226375
12266277677a
131311828154
148c6ac7a22
1551c062747
hex30e2697ce

13122312142 has 16 divisors (see below), whose sum is σ = 19815911280. Its totient is φ = 6517038528.

The previous prime is 13122312089. The next prime is 13122312179. The reversal of 13122312142 is 24121322131.

It is a super-3 number, since 3×131223121423 (a number of 31 digits) contains 333 as substring.

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, 1168458 + ... + 1179634.

It is an arithmetic number, because the mean of its divisors is an integer number (1238494455).

Almost surely, 213122312142 is an apocalyptic number.

13122312142 is a deficient number, since it is larger than the sum of its proper divisors (6693599138).

13122312142 is a wasteful number, since it uses less digits than its factorization.

13122312142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15075.

The product of its digits is 576, while the sum is 22.

Adding to 13122312142 its reverse (24121322131), we get a palindrome (37243634273).

The spelling of 13122312142 in words is "thirteen billion, one hundred twenty-two million, three hundred twelve thousand, one hundred forty-two".

Divisors: 1 2 157 314 3739 7478 11177 22354 587023 1174046 1754789 3509578 41790803 83581606 6561156071 13122312142