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311000134 = 2155500067
BaseRepresentation
bin10010100010010…
…111110001000110
3210200012102222111
4102202113301012
51114104001014
650505451234
710464312634
oct2242276106
9720172874
10311000134
1114a608005
12881a0b1a
134c57c963
142d438354
151c4832c4
hex12897c46

311000134 has 4 divisors (see below), whose sum is σ = 466500204. Its totient is φ = 155500066.

The previous prime is 311000099. The next prime is 311000161. The reversal of 311000134 is 431000113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431000113 = 1672580839.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77750032 + ... + 77750035.

It is an arithmetic number, because the mean of its divisors is an integer number (116625051).

Almost surely, 2311000134 is an apocalyptic number.

311000134 is a deficient number, since it is larger than the sum of its proper divisors (155500070).

311000134 is a wasteful number, since it uses less digits than its factorization.

311000134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155500069.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 311000134 is about 17635.1958877694. The cubic root of 311000134 is about 677.5169925341.

Adding to 311000134 its reverse (431000113), we get a palindrome (742000247).

The spelling of 311000134 in words is "three hundred eleven million, one hundred thirty-four", and thus it is an aban number.

Divisors: 1 2 155500067 311000134