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154030131 = 3219900761
BaseRepresentation
bin10010010111001…
…01000000110011
3101201211112121200
421023211000303
5303412431011
623141222243
73550143303
oct1113450063
9351745550
10154030131
1179a45132
1243701983
1325bb03b8
1416657603
15d7c8856
hex92e5033

154030131 has 12 divisors (see below), whose sum is σ = 234198120. Its totient is φ = 97282080.

The previous prime is 154030127. The next prime is 154030133. The reversal of 154030131 is 131030451.

It is not a de Polignac number, because 154030131 - 22 = 154030127 is a prime.

It is a super-2 number, since 2×1540301312 = 47450562511754322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154030133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450210 + ... + 450551.

It is an arithmetic number, because the mean of its divisors is an integer number (19516510).

Almost surely, 2154030131 is an apocalyptic number.

154030131 is a deficient number, since it is larger than the sum of its proper divisors (80167989).

154030131 is a wasteful number, since it uses less digits than its factorization.

154030131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900786 (or 900783 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 154030131 is about 12410.8875992010. The cubic root of 154030131 is about 536.0457967014.

Adding to 154030131 its reverse (131030451), we get a palindrome (285060582).

The spelling of 154030131 in words is "one hundred fifty-four million, thirty thousand, one hundred thirty-one".

Divisors: 1 3 9 19 57 171 900761 2702283 8106849 17114459 51343377 154030131